CST to BST Converter

Convert time between Central Standard Time (CST) and British Summer Time (BST)

Central Standard Time (CST)

17:52:00
UTC +0
Nov 24, 2025
America/Chicago

British Summer Time (BST)

17:52:00
UTC +0
Nov 24, 2025
Europe/London

Time Difference

British Summer Time (BST) is 0 hours ahead of Central Standard Time (CST)

Select Date

Select Time

Quick Reference

CSTBST
20:0002:00
22:0004:00
00:0006:00
02:0008:00
04:0010:00
06:0012:00
08:0014:00
10:0016:00
12:0018:00
14:0020:00
16:0022:00
18:0000:00

Top 10 Most Common Time Zones

AbbreviationFull NameUTC OffsetTypical Use
UTCCoordinated Universal TimeUTC ±0Global reference standard (servers, logs, APIs)
EST / EDTEastern (US) TimeUTC −5 / −4New York, Toronto — North American business hub
CST / CDTCentral (US) TimeUTC −6 / −5Chicago, Dallas — US central business region
PST / PDTPacific (US) TimeUTC −8 / −7San Francisco, Los Angeles — tech industry standard
GMT / BSTGreenwich Mean / British Summer TimeUTC 0 / +1UK, used globally as a reference with UTC
CET / CESTCentral European (Summer) TimeUTC +1 / +2Paris, Berlin, Amsterdam — EU business core
ISTIndia Standard TimeUTC +5:30India — major IT & outsourcing region
CSTChina Standard TimeUTC +8Beijing, Shanghai — East Asia business hub
JSTJapan Standard TimeUTC +9Tokyo — finance & tech hub
AEST / AEDTAustralian Eastern (Daylight) TimeUTC +10 / +11Sydney, Melbourne — APAC regional business

Why Time Zone Abbreviations Are Ambiguous

Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).

Common Ambiguous Time Zone Abbreviations

Abbrev.Common Meaning(s)UTC OffsetRegion(s)
CSTCentral Standard Time / China Standard Time / Cuba Standard TimeUTC−6 / UTC+8 / UTC−5North America, China, Cuba
ISTIndian Standard Time / Irish Standard Time / Israel Standard TimeUTC+5:30 / UTC+1 / UTC+2India, Ireland, Israel
ASTAtlantic Standard Time / Arabia Standard TimeUTC−4 / UTC+3Caribbean, Canada, Middle East
PSTPacific Standard Time / Philippine Standard TimeUTC−8 / UTC+8North America, Philippines
ESTEastern Standard Time (North America / Australia)UTC−5 / UTC+10North America, Australia

✅ Best Practice

To avoid ambiguity, always:

  • Use IANA tz identifiers — e.g., America/New_York instead of "EST"
  • Specify UTC offset explicitly — e.g., UTC−5 when abbreviations must be used
  • Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset

Related Time Zone Conversions

EST to MST EST to MDT MST to EST MDT to EST MDT to EDT MDT to CDT

About CST to BST Time Conversion

Central Standard Time (CST) is UTC-6, while British Summer Time (BST) is UTC+1. This means BST is 7 hours ahead of CST. When it's 12:00 PM (noon) in Chicago (CST), it's 7:00 PM in London (BST). This conversion is essential for coordinating between North American central businesses and UK operations.

BST is observed from late March to late October during daylight saving time in the UK. During winter months (October-March), the UK uses Greenwich Mean Time (GMT, UTC+0), which would be 6 hours ahead of CST. This converter specifically shows the summer time relationship when both daylight saving periods are active.

Common Use Cases for CST to BST Conversion

Business & Work

  • Scheduling meetings between central US offices and UK headquarters
  • Coordinating with British business partners and clients
  • Managing customer service across Central US and UK time zones

Personal & Travel

  • Coordinating with family and friends in the United Kingdom
  • Planning travel to the UK from the Central US region
  • Scheduling video calls with UK contacts

Time Zone Information

Central Standard Time (CST)

  • UTC Offset: UTC-6 (UTC-5 during CDT)
  • IANA Timezone: America/Chicago
  • Daylight Saving: Second Sunday in March to First Sunday in November
  • Major Cities: Chicago, Dallas, Houston, Kansas City, New Orleans
  • Coverage: Central United States and parts of Canada and Mexico

British Summer Time (BST)

  • UTC Offset: UTC+1 (GMT is UTC+0)
  • IANA Timezone: Europe/London
  • Daylight Saving: Last Sunday in March to Last Sunday in October
  • Major Cities: London, Manchester, Birmingham, Bristol, Edinburgh
  • Coverage: United Kingdom and Ireland

Quick Reference: CST to BST

12:00 PM CST
7:00 PM BST
9:00 AM CST
4:00 PM BST
3:00 PM CST
10:00 PM BST
8:00 AM CST
3:00 PM BST

Remember: BST is always 7 hours ahead of CST (during daylight saving time)

Frequently Asked Questions

What is the time difference between CST and BST?

Central Standard Time (CST) is UTC-6, and British Summer Time (BST) is UTC+1. This means BST is 7 hours ahead of CST. When it's 12:00 PM (noon) in Chicago (CST), it's 7:00 PM the same day in London (BST).

When is BST active?

British Summer Time (BST) is active from the last Sunday in March through the last Sunday in October. During this period, the UK observes daylight saving time with UTC+1 offset. Outside these dates, the UK observes Greenwich Mean Time (GMT) with UTC+0 offset. It's important to note that the US and UK change their clocks on different dates.

How do daylight saving transitions affect the time difference?

The US typically changes to daylight saving time in mid-March (before BST starts on the last Sunday in March) and changes back in early November (after BST ends in late October). This creates variable time differences: 8 hours when US is on EDT and UK is on GMT, 7 hours when both are on summer time (EDT and BST), and 6 hours when US is on CDT and UK is on GMT. CST-to-BST specifically refers to the 7-hour difference when both are active.

Why is this converter useful for business?

If you're coordinating meetings, conference calls, or events between Central US regions and the UK during summer months, you need to account for the 7-hour time difference. This converter helps business professionals, remote teams, and international coordinators quickly determine appropriate meeting times without miscalculating across the transatlantic timezone boundary.

What times work best for transatlantic meetings between CST and BST zones?

Finding optimal meeting times is challenging with a 7-hour difference. Morning hours in London (8:00 AM - 12:00 PM BST) correspond to late evening the previous day in Chicago (1:00 AM - 5:00 AM CST). Conversely, typical US business hours (9:00 AM - 5:00 PM CST) fall late in the UK afternoon/evening (4:00 PM - 12:00 AM BST). The best compromise times are usually early morning US Central and late afternoon UK time.

Is CST to BST conversion different from CST to GMT?

Yes. CST to BST has a 7-hour difference when Britain is observing summer time (late March to late October). CST to GMT has a 6-hour difference when Britain is observing standard time (late October to late March). The UK switches between these two offsets annually, so the effective time difference between CST and UK time changes seasonally. This converter specifically shows the CST-to-BST relationship during British summer.

Pro Tips

  • • Remember: CST is UTC-6 and BST is UTC+1, making BST 7 hours ahead. Simply add 7 hours to any CST time to get the equivalent BST time.
  • • Check the current date to confirm whether the UK is observing BST (late March to late October) or GMT (late October to late March), as the time difference changes seasonally.
  • • The US and UK change their clocks on different dates. For about 2 weeks in mid-March and 1 week in late October/early November, the standard time differences are different from the usual pattern.
  • • For transatlantic business, early morning UK times (8:00 AM - 10:00 AM BST) are often the best window for catching US Central time in the late evening (1:00 AM - 3:00 AM CST) for urgent matters.
  • • If scheduling recurring meetings across time zones, consider rotating meeting times between months when both regions are observing daylight time versus standard time to share the inconvenience fairly.
  • • Use this converter when planning international product launches, financial market coordination, or customer support coverage between US Central operations and UK operations.

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CST to CDT Converter
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CST to AST Converter
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CST to BST Converter
Convert Central Standard Time (CST) to British Summer Time (BST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Central US to UK business coordination, transatlantic meetings, and international planning.
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MDT to PDT Converter
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PST to MDT Converter
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CST to MST Converter
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MDT to MST Converter
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MST to MDT Converter
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MST to CDT Converter
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PDT to BST Converter
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UTC to MST Converter
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UTC to EDT Converter
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UTC to CDT Converter
Convert Coordinated Universal Time (UTC) to Central Daylight Time (CDT) with interactive time picker, conversion chart, FAQ section, and quick reference.
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CDT to EDT Converter
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CDT to CST Converter
Convert Central Daylight Time (CDT) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference.
CDT to PST Converter
Convert Central Daylight Time (CDT) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference.
CDT to PDT Converter
Convert Central Daylight Time (CDT) to Pacific Daylight Time (PDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Central-Pacific region coordination during daylight saving time with minimal 2-hour time difference.
CDT to AST Converter
Convert Central Daylight Time (CDT) to Atlantic Standard Time (AST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Central-Atlantic Canada coordination with 1-hour time difference.
CDT to AKST Converter
Convert Central Daylight Time (CDT) to Alaska Standard Time (AKST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Central-Alaska business coordination with 4-hour time difference.
CDT to BST Converter
Convert Central Daylight Time (CDT) to British Summer Time (BST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for transatlantic Central US-UK business coordination with 6-hour time difference.
EDT to CST Converter
Convert Eastern Daylight Time (EDT) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference.
EDT to PST Converter
Convert Eastern Daylight Time (EDT) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference.
EDT to UTC Converter
Convert Eastern Daylight Time (EDT) to Coordinated Universal Time (UTC) with interactive time picker, conversion chart, FAQ section, and quick reference.
EST to GMT Converter
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GMT to EST Converter
Convert Greenwich Mean Time (GMT) to Eastern Standard Time (EST) with interactive time picker, conversion chart, and quick reference.
GMT to PST Converter
Convert Greenwich Mean Time (GMT) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference.
GMT to CST Converter
Convert Greenwich Mean Time (GMT) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference.
GMT to MST Converter
Convert Greenwich Mean Time (GMT) to Mountain Standard Time (MST) with interactive time picker, conversion chart, FAQ section, and quick reference.
PST to GMT Converter
Convert Pacific Standard Time (PST) to Greenwich Mean Time (GMT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for US-UK business coordination.
PST to BST Converter
Convert Pacific Standard Time (PST) to British Summer Time (BST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for US-UK summer business coordination.
BST to EST Converter
Convert British Summer Time (BST) to Eastern Standard Time (EST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-US East Coast coordination during daylight saving time.
BST to EDT Converter
Convert British Summer Time (BST) to Eastern Daylight Time (EDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-US East Coast coordination during summer daylight saving time.
BST to CST Converter
Convert British Summer Time (BST) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-US Central region coordination during daylight saving time.
BST to CDT Converter
Convert British Summer Time (BST) to Central Daylight Time (CDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-US Central region coordination during summer daylight saving time.
BST to MST Converter
Convert British Summer Time (BST) to Mountain Standard Time (MST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-US Mountain region coordination during winter months.
BST to MDT Converter
Convert British Summer Time (BST) to Mountain Daylight Time (MDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-US Mountain region coordination during summer daylight saving time.
BST to PST Converter
Convert British Summer Time (BST) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-US West Coast coordination during daylight saving time.
BST to PDT Converter
Convert British Summer Time (BST) to Pacific Daylight Time (PDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-US West Coast coordination during summer daylight saving time.
BST to AST Converter
Convert British Summer Time (BST) to Atlantic Standard Time (AST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-Atlantic Canada coordination during winter months.
BST to AKST Converter
Convert British Summer Time (BST) to Alaska Standard Time (AKST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-Alaska coordination during winter months.
BST to HST Converter
Convert British Summer Time (BST) to Hawaii Standard Time (HST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-Hawaii coordination. Hawaii does not observe daylight saving time.
BST to IST Converter
Convert British Summer Time (BST) to India Standard Time (IST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for UK-India business coordination. India does not observe daylight saving time.
EST to IST Converter
Convert Eastern Standard Time (EST) to India Standard Time (IST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for US-India business coordination.
CET to EST Converter
Convert Central European Time (CET) to Eastern Standard Time (EST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for transatlantic coordination.
CET to PST Converter
Convert Central European Time (CET) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Europe to West Coast coordination.
CET to CST Converter
Convert Central European Time (CET) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Europe to Central US coordination.
CET to IST Converter
Convert Central European Time (CET) to India Standard Time (IST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Europe-India business coordination.
CET to MST Converter
Convert Central European Time (CET) to Mountain Standard Time (MST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Europe-Mountain region coordination.
CET to EDT Converter
Convert Central European Time (CET) to Eastern Daylight Time (EDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Europe-US East Coast coordination during daylight saving time.
CET to GMT Converter
Convert Central European Time (CET) to Greenwich Mean Time (GMT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Continental Europe-UK coordination with just 1-hour difference.
PDT to EST Converter
Convert Pacific Daylight Time (PDT) to Eastern Standard Time (EST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for coast-to-coast coordination.
EDT to EST Converter
Understand the difference between Eastern Daylight Time (EDT) and Eastern Standard Time (EST). Interactive converter showing 1-hour time difference with daylight saving transition dates.
IST to EST Converter
Convert India Standard Time (IST) to Eastern Standard Time (EST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-US business coordination.
CEST to EST Converter
Convert Central European Summer Time (CEST) to Eastern Standard Time (EST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Europe-US business coordination during summer months.
CEST to PST Converter
Convert Central European Summer Time (CEST) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Europe to West Coast business coordination during summer months.
CEST to UTC Converter
Convert Central European Summer Time (CEST) to Coordinated Universal Time (UTC) with interactive time picker, conversion chart, FAQ section, and quick reference. Essential for international coordination and working with UTC-based systems.
CEST to CST Converter
Convert Central European Summer Time (CEST) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Europe to Central US business coordination during summer months.
CST to IST Converter
Convert Central Standard Time (CST) to India Standard Time (IST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for US Midwest-India business coordination and outsourcing teams.
IST to CST Converter
Convert India Standard Time (IST) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-Central US business coordination and IT outsourcing teams.
PST to IST Converter
Convert Pacific Standard Time (PST) to India Standard Time (IST) with interactive time picker, conversion chart, and quick reference. Perfect for US-India business coordination and Silicon Valley to India tech partnerships.
IST to PST Converter
Convert India Standard Time (IST) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-Silicon Valley tech company coordination.
IST to EDT Converter
Convert India Standard Time (IST) to Eastern Daylight Time (EDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-US East Coast business coordination.
IST to CDT Converter
Convert India Standard Time (IST) to Central Daylight Time (CDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-US Central region business coordination.
IST to PDT Converter
Convert India Standard Time (IST) to Pacific Daylight Time (PDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-Silicon Valley and West Coast tech company coordination.
IST to MST Converter
Convert India Standard Time (IST) to Mountain Standard Time (MST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-US Mountain region business coordination.
IST to MDT Converter
Convert India Standard Time (IST) to Mountain Daylight Time (MDT) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-US Mountain region summer business coordination.
IST to AST Converter
Convert India Standard Time (IST) to Atlantic Standard Time (AST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-Atlantic Canada business coordination.
IST to AKST Converter
Convert India Standard Time (IST) to Alaska Standard Time (AKST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-Alaska business coordination.
IST to BST Converter
Convert India Standard Time (IST) to British Summer Time (BST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for India-UK business coordination with excellent time overlap.
IST to UTC Converter
Convert India Standard Time (IST) to Coordinated Universal Time (UTC) with interactive time picker, conversion chart, FAQ section, and quick reference. Essential for international coordination and global business operations.
HST to EST Converter
Convert Hawaii Standard Time (HST) to Eastern Standard Time (EST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Hawaii-East Coast coordination and tourism businesses.
HST to PST Converter
Convert Hawaii Standard Time (HST) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Hawaii-West Coast coordination and business scheduling.
HST to CST Converter
Convert Hawaii Standard Time (HST) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Hawaii-Midwest coordination and business operations.
HST to MST Converter
Convert Hawaii Standard Time (HST) to Mountain Standard Time (MST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Hawaii-Mountain region coordination and scheduling.
JST to EST Converter
Convert Japan Standard Time (JST) to Eastern Standard Time (EST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Japan-East Coast coordination and international business operations.
JST to PST Converter
Convert Japan Standard Time (JST) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Japan-Silicon Valley coordination and tech business operations.
JST to CST Converter
Convert Japan Standard Time (JST) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Japan-Midwest coordination and business operations.
KST to EST Converter
Convert Korea Standard Time (KST) to Eastern Standard Time (EST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for South Korea-East Coast USA business coordination.
KST to PST Converter
Convert Korea Standard Time (KST) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for South Korea-Silicon Valley tech business coordination.
KST to CST Converter
Convert Korea Standard Time (KST) to Central Standard Time (CST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for South Korea-Midwest USA business coordination.
KST to UTC Converter
Convert Korea Standard Time (KST) to Coordinated Universal Time (UTC) with interactive time picker, conversion chart, FAQ section, and quick reference. Essential for international business and global team coordination.
KST to CET Converter
Convert Korea Standard Time (KST) to Central European Time (CET) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for South Korea-Europe business coordination and international partnerships.
AEST to EST Converter
Convert Australian Eastern Standard Time (AEST) to Eastern Standard Time (EST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Australia-East Coast USA business coordination.
EST to AEST Converter
Convert Eastern Standard Time (EST) to Australian Eastern Standard Time (AEST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for US East Coast-Australia business coordination and international partnerships.
PST to AST Converter
Convert Pacific Standard Time (PST) to Atlantic Standard Time (AST) with interactive time picker, conversion chart, and quick reference. Perfect for Pacific West Coast-Atlantic Canada business coordination.
PST to AEST Converter
Convert Pacific Standard Time (PST) to Australian Eastern Standard Time (AEST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for US West Coast-Australia business coordination and Silicon Valley-Sydney operations.
AEST to PST Converter
Convert Australian Eastern Standard Time (AEST) to Pacific Standard Time (PST) with interactive time picker, conversion chart, FAQ section, and quick reference. Perfect for Australia-US West Coast business coordination and international partnerships.

Calculator

401(k) Calculator
Estimate your retirement savings with our comprehensive 401(k) calculator. Calculate projected retirement balance, early withdrawal costs, and maximize employer matching contributions.
Age Calculator
Calculate your age in years, months, days, hours, minutes, and seconds with our age calculator.
Annual Mileage Calculator
Calculate your annual mileage and estimate fuel costs with our easy-to-use Annual Mileage Calculator.
Average Calculator
Calculate the average (mean) and median of any set of numbers. Enter values separated by commas, spaces, or paste from spreadsheets. Get instant statistical analysis including sum, count, min, max, and range.
Area Calculator
Calculate the area of any shape instantly. Supports squares, rectangles, triangles, parallelograms, trapezoids, circles, and ellipses.
BMI Calculator
Calculate your Body Mass Index (BMI) and understand your weight category with our easy-to-use BMI calculator supporting both metric and imperial units.
Calorie Burned Calculator
Calculate calories burned during exercise and daily activities. Uses accurate MET values for over 40 activities including running, cycling, swimming, sports, and household tasks.
Erlang Calculator
Calculate call center staffing needs using Erlang B or Erlang C, factoring call volume, handling time, and service level to fine tune customer wait times.
IP Subnet Calculator
Calculate IPv4 and IPv6 subnets with CIDR notation. Determine network addresses, broadcast addresses, subnet masks, and host ranges for network planning.
Fuel to Distance Calculator
Calculate how far you can travel with a given amount of fuel, or determine how much fuel you need for a specific distance.
Paycheck Calculator
Easily estimate your take-home pay with our free Paycheck Calculator. Calculate net pay after taxes and deductions instantly.
Tip Calculator
Calculate tips and split bills easily. Perfect for restaurants, service providers, and group expenses with customizable tip percentages.
Day of the Year Calculator
Calculate the day of the year for any date with our easy-to-use tool.
Interest Calculator
Calculate compound interest growth with regular contributions, tax effects, inflation adjustment, and detailed yearly breakdowns for investment planning.
Compound Interest Calculator
Calculate compound interest with additional contributions and compare different investment scenarios with interactive charts.
EE Bond Calculator
Calculate EE bond maturity values, interest earned, and growth projections. Track current value with Treasury interest rates and early withdrawal penalties.
Savings Goal Calculator
Calculate how much money you need to contribute each month to reach your specific savings goal with compound interest calculations.
Loan Calculator
Calculate loan payments, total interest, and payoff scenarios for personal loans, auto loans, and mortgages. Compare loan options and analyze early payoff benefits.
Mortgage Calculator
Calculate monthly mortgage payments, PMI, amortization schedules, and analyze extra payments. Supports conventional, FHA, and VA loans with comprehensive cost analysis.
Mortgage Payoff Calculator
Calculate your mortgage payoff date and see how extra monthly payments can save you thousands in interest. Visualize your payoff timeline with detailed schedules.
GPA Calculator
Calculate your Grade Point Average with weighted and unweighted systems, semester GPA calculation, and target GPA planning for academic success.
UF GPA Calculator
Calculate University of Florida weighted GPA using Florida's grading system with AP, IB, AICE, Honors, and Dual Enrollment course bonuses for admissions.
Cumulative GPA Calculator
Calculate your cumulative GPA by combining previous semesters with new courses. Track your overall academic progress and plan future grades to achieve your goals.
Investment Return Calculator
Calculate returns on stocks, bonds, mutual funds, and other investments. Factor in dividends, fees, taxes, and analyze dollar-cost averaging scenarios.
Watts to kWh Calculator
Convert power in watts (W) to energy in kilowatt-hours (kWh). Calculate energy consumption, electricity costs, and environmental impact for appliances and devices.
Battery Backup Calculator
Calculate battery backup time and required capacity for UPS systems, off-grid power, and emergency backup solutions with comprehensive energy analysis.
Frequency to Wavelength Calculator
Convert frequency to wavelength using λ = c/f formula. Calculate electromagnetic wave properties for radio, microwave, and optical frequencies with different mediums.
Capacitor Color Code Calculator
Decode capacitor color bands to determine capacitance values, tolerance, and specifications. Supports 3, 4, and 5-band capacitors with visual color selection.
Pregnancy Due Date Calculator
Calculate pregnancy due dates from last menstrual period or conception date. Include trimester breakdowns, important milestone dates, appointment schedules, and fetal development information.
Body Fat Calculator
Calculate your body fat percentage using US Navy method and BMI method. Free body fat calculator with comprehensive results, ideal ranges, and health recommendations.
Cubic Yards to Tons Calculator
Convert cubic yards to tons for construction materials, soil, gravel, and more. Free calculator with material densities for accurate volume to weight conversion.
Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law. Free calculator with step-by-step solutions, formulas, Ohm's Law wheel, and educational content about electrical circuits.
Square Footage Calculator
Calculate area and square footage for rooms, houses, and irregular spaces. Support for different shapes (rectangle, circle, triangle), multiple rooms, and conversion between different area units.
Mixed Number Calculator
Calculate with mixed numbers and fractions. Add, subtract, multiply, and divide mixed numbers with step-by-step solutions, conversions between mixed and improper fractions.
Improper Fraction to Mixed Number Calculator
Convert improper fractions to mixed numbers with step-by-step solutions. Free calculator with detailed explanations, examples, and conversion process.
Mixed Number to Improper Fraction Calculator
Convert mixed numbers to improper fractions with step-by-step solutions. Free calculator with detailed explanations, examples, and educational content.
Decimal to Fraction Calculator
Convert decimal numbers to fractions and mixed numbers with step-by-step solutions. Supports repeating decimals, simplification, and detailed conversion process.
Partial Fraction Decomposition Calculator
Decompose rational functions into partial fractions with step-by-step solutions. Supports linear and quadratic factors for calculus, algebra, and integration problems.
Weight Loss Calculator
Calculate how long or how much exercise is needed to burn fat. Estimate time to lose 1 lb/1 kg with various activities and get personalized weight loss projections based on BMR and TDEE.
Daily Calorie Needs Calculator
Calculate your daily calorie requirements based on age, height, weight, sex, and activity level. Get personalized BMR and TDEE calculations for weight loss, maintenance, and weight gain goals.
Retirement Calculator
Plan retirement savings with calculations for 401(k), IRA, and other retirement accounts. Include employer matching, inflation adjustments, withdrawal strategies, and social security projections.
Break-Even Point Calculator
Calculate business break-even points considering fixed costs, variable costs per unit, and selling price. Include margin of safety calculations, target profit analysis, and sensitivity analysis for price changes.
YouTube Money Calculator
Calculate your YouTube earnings based on views and RPM (Revenue Per Mille). Estimate your income potential and understand how your video performance translates to actual revenue.
Amps to Watts Calculator
Convert amps to watts using the formula W = A × V. Support for DC, single-phase AC, and three-phase AC power systems with power factor adjustment.
Amps to Kilowatts Calculator
Convert amps to kilowatts using the formula kW = (A × V) ÷ 1,000. Support for DC, single-phase AC, and three-phase AC power systems with power factor adjustment.
Stoichiometry Calculator
Calculate stoichiometric relationships in chemical reactions. Parse balanced equations and determine molar ratios between reactants and products with molar mass calculations.
Sum Calculator
Calculate the total sum of any set of numbers. Enter numbers separated by commas, spaces, or paste from spreadsheets. Get instant results with sum, count, and average calculations.

Random

Random Word Generator
Generate random words for writing prompts, creative exercises, or games with categories like nouns, verbs, adjectives, and compound words. Bulk generation with export options.
Random 6 Digit Number Generator
Generate secure random numbers with customizable digit length (1 to 100,000 digits). Perfect for testing, security codes, games, and data generation using cryptographic randomization.
Random Number Between 1 And 50
Generate random numbers within a specific range. Perfect for games, lotteries, decisions, and random selections with cryptographic security.
Mcdonald or KFC
Generate random Mcdonald or KFC answers to help make quick decisions. Customize your options and let chance decide between two possibilities.
Pizza or Burger
Generate random Pizza or Burger answers to help make quick decisions. Customize your options and let chance decide between two possibilities.
Coffee or Tea
Generate random Coffee or Tea answers to help make quick decisions. Customize your options and let chance decide between two possibilities.
Yes or No
Generate random Yes or No answers to help make quick decisions. Customize your options and let chance decide between two possibilities.
Random Quote Generator
Get inspired with random quotes from famous people, organized by categories like motivation, wisdom, and success.
Secure Password Generator
Generate secure passwords and passphrases with various types of strong passwords, passphrases, random passwords and pin codes.
Random Color Generator
Generate random colors with hex codes and explore color theory with interactive color wheels showing complementary, triadic, analogous, and monochromatic colors.
Random Color Picker
Pick random colors from your custom palette. Add, edit, and delete colors, then randomly select one or more for your projects.
Random Security Check
Automatically run random security checks on your web applications to identify vulnerabilities and strengthen your site's overall protection.
Random Name Picker
Easily and randomly select names from any list for giveaways, meetings, or decision-making with our simple selection tool.
Random Decision Maker
Make decisions easily by entering your question and options. Let our random decision maker help you choose when you can't decide.
Random Team Generator
Generate random teams from a list of participants. Perfect for sports, group projects, or any activity requiring balanced team division.
Random List Shuffler
Shuffle any list of items into random order. Perfect for randomizing presentations, playlists, or task orders with visual animation and undo functionality.
JSON Randomizer
Generate random JSON data for testing, API development, and mock data creation. Customize data types, structure depth, templates, and export formats for developers and testers.

Engineering

Voltage Divider Calculator
Calculate output voltage, resistor values, power dissipation, and current for voltage divider circuits used in electronics and engineering.
Resistor Color Code Calculator
Decode resistor color bands to determine resistance values, tolerance, and power ratings for 4, 5, and 6-band resistors with visual representation.
Capacitor Value Calculator
Convert capacitor marking codes to values in pF, nF, and µF. Support for 3-digit codes, tolerance letters, and reverse lookup from value to code.
Wire Gauge Converter
Convert between AWG, millimeters, inches, square mm, square inches, and circular mils. Complete AWG chart with current ratings and resistance values.
Wave Frequency Calculator
Calculate wave frequency, wavelength, and speed using f=v/λ. Support for electromagnetic waves, sound waves, and custom mediums with unit conversions.
Fourier Series Visualizer
Interactive tool for visualizing Fourier series decomposition with real-time coefficient calculation, animation, and function approximation for signal analysis.
Sampling & Nyquist Calculator
Calculate Nyquist rate, check sampling sufficiency, analyze aliasing, and compute oversampling ratios for signal processing applications.
Beam Deflection Calculator
Calculate maximum deflection for simply supported and cantilever beams with point loads or distributed loads. Includes structural engineering formulas and design guidelines.
Bolt Torque Calculator
Calculate proper tightening torque for bolts based on material grade, preload requirements, and friction coefficients. Includes safety checks and engineering formulas.
Gear Ratio Calculator
Free professional gear ratio calculator for mechanical engineering. Calculate speed reduction, torque multiplication, compound gear trains, and mechanical advantage with real-time formulas and step-by-step solutions.
Molar Mass Calculator
Calculate molar mass and analyze chemical formulas with detailed elemental breakdown. Supports complex formulas, hydrates, parentheses, and provides mass percentages for chemistry applications.
Ideal Gas Law Calculator
Calculate pressure, volume, temperature, or moles using the ideal gas law (PV = nRT). Free calculator with multiple units, step-by-step solutions, and educational content for chemistry and physics.
Op-Amp Calculator
Calculate operational amplifier circuit parameters for inverting, non-inverting, differential, and integrator/differentiator configurations. Include gain, input/output impedance, and bandwidth calculations.
Heat Transfer Calculator
Calculate heat transfer rates for conduction, convection, and radiation. Include thermal resistance, heat exchanger analysis, and cooling calculations for engineering applications.
Transformer Turns Calculator
Calculate transformer turns ratios, primary/secondary voltages, currents, and power relationships. Include step-up/step-down calculations, impedance transformation, and efficiency calculations.
Power Electronics Calculator
Design and analyze DC-DC converters (buck, boost, buck-boost), calculate switching frequencies, inductor/capacitor values, and efficiency for power supply design.
Motor RPM Calculation
Calculate motor rotational speed from Hall-effect sensors, encoders, tachometers, and back-EMF measurements. Includes filtering, calibration, and performance analysis for motor control applications.
KVAR Calculator
Calculate required reactive power (KVAR) for power factor correction, capacitor bank sizing, and energy savings analysis for electrical systems and industrial applications.
HP to kW Motor Converter
Convert between horsepower (HP) and kilowatts (kW) for mechanical, electrical, and metric motor ratings with efficiency and load adjustments for engineering applications.
mAh to Wh Converter
Convert battery capacity between milliamp-hours (mAh) and watt-hours (Wh). Calculate energy storage for batteries, power banks, and electronic devices.
kW to kWh Converter
Convert kilowatts (kW) to kilowatt-hours (kWh) and calculate energy consumption from power and time. Estimate electricity costs for appliances and devices.
kWh to Watts Converter
Convert kilowatt-hours (kWh) to watts and calculate average power consumption from energy and time. Understand device power ratings and energy usage patterns.

Screensaver

Black Screen
A free backlight bleed tester to check dead pixels, backlight bleeding. Test monitor, laptop, mobile screen or other display issues.
White Screen
Quickly detect dead pixels, screen flicker, or backlight bleed on any monitor with our advanced display testing tool.
Red Screen
Spot dead pixels, color uniformity issues, or backlight bleeding fast-ensure your screen quality with our pixel checker.
Green Screen
Instantly check for dead pixels, backlight bleed, or display defects to guarantee flawless screen performance.
Blue Screen
Test your monitor for dead pixels, backlight bleeding, and color inconsistencies in seconds with our display diagnostic tool.
Yellow Screen
Identify dead pixels, uneven backlighting, or screen defects easily-optimize your monitor's display quality now.
Purple Screen
Find and fix dead pixels, backlight bleeding, or display issues using our comprehensive screen testing solution.
Cyan Screen
Ensure perfect screen quality by detecting dead pixels, backlight bleed, and other monitor issues instantly.
Orange Screen
Diagnose dead pixels, backlight bleeding, or display problems quickly-improve your monitor's performance and viewing experience.
Pink Screen
Uncover dead pixels, backlight bleed, or screen defects fast with our user-friendly display testing tool.
Brown Screen
Verify your screen for dead pixels, backlight bleeding, or color issues to maintain top display performance.
Gray Screen
Easily detect dead pixels, backlight bleed, and other screen issues to ensure your display's optimal quality.
Lime Screen
Quickly identify and troubleshoot dead pixels, backlight bleeding, and display defects for a flawless viewing experience.
Time Screen
Display the local time on your screensaver, automatically adjusting to your current time zone for accurate, real-time clock display.
Date Screen
A screensaver that displays the current date and time. Real-time clock display on your desktop or device.
Clock Screen
Elegant clock screensaver displaying the current time with customizable styles, perfect for adding a sleek look to your screen.
Snake Game
Watch an auto-playing snake game with AI pathfinding. The snake uses BFS algorithm to automatically navigate through obstacles and eat food in this interactive screensaver.

Utilities

Webcam Tester
Quickly test your webcam and verify camera settings to ensure optimal video quality and proper device functionality.
Microphone Test
Test your microphone and verify settings to ensure clear audio quality and proper device performance for free.
Flashlight Tester
Test your flashlight and verify settings to ensure optimal lighting and proper device functionality for free.
Morse Code Translator
Free online Morse code generator. Convert text to Morse code, e.g.: SOS in morse code, and vice versa.
Cookie Manager
View, edit, and manage your browser cookies effortlessly to control privacy, enhance security, and customize your browsing experience.
Credit Card Number Validation
Validate credit card numbers using the Luhn algorithm to ensure they are valid and secure.
Online Tally Counter
Free online tally counter with multiple counters, labels, and total calculation. Perfect for counting, tracking, and tallying various items.
Spacebar Counter
Simple spacebar counter - press spacebar or click + button to count. Perfect for counting repetitions, events, or any activity.
Password Strength Tester
Test your password strength and learn how secure your password is. Get real-time feedback and tips to create stronger passwords.
Website Screenshot
Generate screenshots of websites by entering a URL, with options for different device viewports (mobile, tablet, desktop) and full-page captures.
Color Blindness Simulator
Simulate how colors appear to users with different types of color blindness to ensure designs are accessible to users with color vision deficiencies.
Weight Tracker
Track and compare weight progress for multiple users. Add, edit, and delete weight records with visual progress reports and user comparison.

Printable

Printable Calendar
Generate and download printable monthly calendars for any month and year. Perfect for planning, organizing, and printing.
January 2025 Calendar
Generate and download printable January 2025 Calendar. Perfect for planning, organizing, and printing.
February 2025 Calendar
Generate and download printable February 2025 Calendar. Perfect for planning, organizing, and printing.
March 2025 Calendar
Generate and download printable March 2025 Calendar. Perfect for planning, organizing, and printing.
April 2025 Calendar
Generate and download printable April 2025 Calendar. Perfect for planning, organizing, and printing.
May 2025 Calendar
Generate and download printable May 2025 Calendar. Perfect for planning, organizing, and printing.
June 2025 Calendar
Generate and download printable June 2025 Calendar. Perfect for planning, organizing, and printing.
July 2025 Calendar
Generate and download printable July 2025 Calendar. Perfect for planning, organizing, and printing.
August 2025 Calendar
Generate and download printable August 2025 Calendar. Perfect for planning, organizing, and printing.
September 2025 Calendar
Generate and download printable September 2025 Calendar. Perfect for planning, organizing, and printing.
October 2025 Calendar
Generate and download printable October 2025 Calendar. Perfect for planning, organizing, and printing.
November 2025 Calendar
Generate and download printable November 2025 Calendar. Perfect for planning, organizing, and printing.
December 2025 Calendar
Generate and download printable December 2025 Calendar. Perfect for planning, organizing, and printing.
January 2026 Calendar
Generate and download printable January 2026 Calendar. Perfect for planning, organizing, and printing.
February 2026 Calendar
Generate and download printable February 2026 Calendar. Perfect for planning, organizing, and printing.
March 2026 Calendar
Generate and download printable March 2026 Calendar. Perfect for planning, organizing, and printing.