BST to CST Converter
Convert time between British Summer Time (BST) and Central Standard Time (CST)
British Summer Time (BST)
22:50:17
UTC +0
Nov 14, 2025
Europe/London
Central Standard Time (CST)
22:50:17
UTC +0
Nov 14, 2025
America/Chicago
Time Difference
Central Standard Time (CST) is 0 hours ahead of British Summer Time (BST)
Select Date
Select Time
Quick Reference
| BST | CST |
|---|---|
| 02:00 | 20:00 |
| 04:00 | 22:00 |
| 06:00 | 00:00 |
| 08:00 | 02:00 |
| 10:00 | 04:00 |
| 12:00 | 06:00 |
| 14:00 | 08:00 |
| 16:00 | 10:00 |
| 18:00 | 12:00 |
| 20:00 | 14:00 |
| 22:00 | 16:00 |
| 00:00 | 18:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, 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 Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
Related Time Zone Conversions
About BST to CST Time Conversion
Converting time between British Summer Time (BST) and Central Standard Time (CST) is essential for coordinating activities between the UK and the US Central region during daylight saving time. BST is UTC+1, while CST is UTC-6, making CST 7 hours behind BST.
This time zone converter uses the IANA timezone database to ensure accurate calculations, accounting for daylight saving time transitions and regional variations. Whether you're scheduling business meetings between London and Chicago, planning travel, or coordinating with teams across time zones, our converter provides reliable results.
Common Use Cases for BST to CST Conversion
Business & Work
- Scheduling meetings between UK and US Central region offices
- Coordinating London and Chicago business operations
- Planning transatlantic conference calls and webinars for Central US
Personal & Travel
- Planning travel itineraries from UK to US Central region
- Coordinating with family and friends in Chicago, Dallas, and Houston
- Scheduling virtual events with UK-US Central audiences
Time Zone Information
British Summer Time (BST)
- UTC Offset: UTC+1 (UTC+0 during GMT)
- IANA Timezone: Europe/London
- Daylight Saving: Last Sunday in March to Last Sunday in October
- Major Cities: London, Manchester, Edinburgh, Cardiff, Belfast
- Coverage: United Kingdom and Ireland (during daylight saving time)
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, Memphis, New Orleans
- Coverage: Central United States and Canada
Quick Reference: BST to CST
12:00 PM BST
5:00 AM CST
3:00 PM BST
8:00 AM CST
6:00 PM BST
11:00 AM CST
9:00 PM BST
2:00 PM CST
Remember: CST is always 7 hours behind BST
Frequently Asked Questions
What is the time difference between BST and CST?
British Summer Time (BST) is UTC+1, while Central Standard Time (CST) is UTC-6. BST is 7 hours ahead of CST. This means when it's 1:00 PM in BST, it's 6:00 AM in CST. Note that BST is only active during daylight saving time (late March to late October).
When is BST active and what happens the rest of the year?
British Summer Time (BST) is active from the last Sunday in March to the last Sunday in October. During the rest of the year (late October to late March), the UK observes Greenwich Mean Time (GMT), which is UTC+0. This changes the time difference to 6 hours during GMT. CST does not observe daylight saving time year-round.
Does the US Central region also observe daylight saving time?
Yes, the US Central region observes daylight saving time. From mid-March to early November, it uses Central Daylight Time (CDT, UTC-5), and the rest of the year uses Central Standard Time (CST, UTC-6). During CDT, the difference from BST becomes 6 hours instead of 7. Always verify which daylight saving period is active when scheduling.
What are the major cities in BST and CST timezones?
BST covers major UK cities including London, Manchester, Edinburgh, Cardiff, and Belfast. CST covers major Central US cities like Chicago, Dallas, Houston, Memphis, New Orleans, and St. Louis. Understanding these key business hubs helps with transatlantic coordination.
How do I convert BST to CST manually?
To convert from BST to CST, subtract 7 hours from the BST time. For example, if it's 3:00 PM BST, it would be 8:00 AM CST. Remember that this conversion only applies during daylight saving time (late March to late October). Outside this period, use GMT (UTC+0) for UK time, which is 6 hours ahead of CST.
What should I know about scheduling across BST and CST?
The UK and US Central region have very limited working hour overlap. Morning BST times (8-10 AM) correspond to early morning CST times (1-3 AM), while afternoon BST (2-4 PM) corresponds to early morning CST (7-9 AM). This makes synchronous meetings challenging, requiring one party to work very early or very late hours.
Pro Tips
- • BST is always 7 hours ahead of CST - but only during late March to late October. Outside this period, use GMT which is 6 hours ahead.
- • Both UK and US observe daylight saving but on different dates. UK changes occur on the last Sunday of March and October, while US Central changes happen on the second Sunday of March and first Sunday of November.
- • Morning BST (8-10 AM) equals very early morning CST (1-3 AM), making real-time collaboration nearly impossible during these hours without one party working overnight.
- • Early afternoon BST (2-4 PM) roughly aligns with morning CST (7-9 AM), offering the best window for transatlantic business meetings during standard hours.
- • For best scheduling results, early morning UK times (7-8 AM BST = 12-1 AM CST) are impractical, while late afternoon UK times (4-6 PM BST = 9-11 AM CST) work better for Central US business hours.
- • Always check daylight saving transition dates when scheduling events far in advance, as UK (late March/October) and US Central (mid-March/early November) change on different dates by 1-2 weeks.
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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.
Compound Interest Calculator
Calculate compound interest with additional contributions and compare different investment scenarios with interactive charts.
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.
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.
Stoichiometry Calculator
Calculate stoichiometric relationships in chemical reactions. Parse balanced equations and determine molar ratios between reactants and products with molar mass 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.
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.