CET to GMT Converter
Convert time between Central European Time (CET) and Greenwich Mean Time (GMT)
Central European Time (CET)
22:51:33
UTC +0
Nov 14, 2025
Europe/Paris
Greenwich Mean Time (GMT)
22:51:33
UTC +0
Nov 14, 2025
Europe/London
Time Difference
Greenwich Mean Time (GMT) is 0 hours ahead of Central European Time (CET)
Select Date
Select Time
Quick Reference
| CET | GMT |
|---|---|
| 03:00 | 02:00 |
| 05:00 | 04:00 |
| 07:00 | 06:00 |
| 09:00 | 08:00 |
| 11:00 | 10:00 |
| 13:00 | 12:00 |
| 15:00 | 14:00 |
| 17:00 | 16:00 |
| 19:00 | 18:00 |
| 21:00 | 20:00 |
| 23:00 | 22:00 |
| 01:00 | 00:00 |
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 CET to GMT Time Conversion
Converting time between Central European Time (CET) and Greenwich Mean Time (GMT) is essential for coordinating business activities within Europe and between continental Europe and the United Kingdom. CET is UTC+1, while GMT is UTC+0, making CET just 1 hour ahead of GMT.
This time zone converter uses the IANA timezone database to ensure accurate calculations. CET is observed across most of Continental Europe during winter (October to March), while GMT is observed in the UK during the same period. Whether you're scheduling business meetings between Paris and London, planning travel, or coordinating with UK teams, our converter provides reliable results.
Common Use Cases for CET to GMT Conversion
Business & Work
- Scheduling meetings between Continental Europe and UK offices
- Coordinating business operations between European and British regions
- Planning conference calls between EU and UK representatives
Personal & Travel
- Planning travel from Continental Europe to the United Kingdom
- Coordinating with family and friends in the UK
- Scheduling virtual events with Continental Europe-UK audiences
Time Zone Information
Central European Time (CET)
- UTC Offset: UTC+1 (UTC+2 during CEST)
- IANA Timezone: Europe/Paris
- Daylight Saving: Last Sunday in March to Last Sunday in October
- Major Cities: Paris, Berlin, Amsterdam, Brussels, Vienna, Madrid, Rome
- Coverage: Central and Western Europe, including most EU countries (winter period)
Greenwich Mean Time (GMT)
- UTC Offset: UTC+0 (UTC+1 during BST)
- IANA Timezone: Europe/London
- Daylight Saving: Last Sunday in March to Last Sunday in October
- Major Cities: London, Edinburgh, Cardiff, Belfast, Dublin
- Coverage: United Kingdom and Ireland (winter period)
Quick Reference: CET to GMT
8:00 AM CET
7:00 AM GMT
12:00 PM CET
11:00 AM GMT
6:00 PM CET
5:00 PM GMT
9:00 PM CET
8:00 PM GMT
Remember: CET is always 1 hour ahead of GMT
Frequently Asked Questions
What is the time difference between CET and GMT?
Central European Time (CET) is UTC+1, while Greenwich Mean Time (GMT) is UTC+0. CET is 1 hour ahead of GMT. This means when it's 6:00 PM in CET, it's 5:00 PM in GMT. This simple 1-hour difference makes CET to GMT conversion one of the easiest timezone conversions in Europe.
When is CET active and when does it change to CEST?
Central European Time (CET) is active during winter months from the last Sunday in October to the last Sunday in March. During the summer months (late March to late October), it transitions to Central European Summer Time (CEST, UTC+2). During CET period, the time difference from GMT is always 1 hour.
Does the UK also observe daylight saving time?
Yes, the UK observes daylight saving time. It transitions from GMT (UTC+0) to British Summer Time (BST, UTC+1) on the last Sunday in March and back to GMT on the last Sunday in October - the same dates as Continental Europe's CET/CEST transitions. This means the 1-hour difference between CET and GMT remains constant year-round.
What major cities are in CET and GMT timezones?
CET covers major Continental European cities including Paris, Berlin, Amsterdam, Brussels, Vienna, Madrid, and Rome. GMT covers UK and Irish cities like London, Edinburgh, Cardiff, Belfast, and Dublin. These are important business hubs across Europe and the UK, making CET-GMT conversion essential for European business coordination.
How do I convert CET to GMT manually?
To convert from CET to GMT, simply subtract 1 hour from the CET time. For example, if it's 3:00 PM CET, it would be 2:00 PM GMT. This works consistently throughout the year because both regions transition their clocks on the same dates.
What should I know about scheduling across CET and GMT?
The time difference is minimal, making it easy to schedule meetings between Continental Europe and the UK. Morning hours in CET (8-10 AM) correspond to early morning GMT (7-9 AM), while afternoon CET (2-4 PM) corresponds to late morning GMT (1-3 PM). This makes nearly all business hours compatible for synchronous meetings.
Pro Tips
- • CET is consistently 1 hour ahead of GMT - the simplest major timezone conversion in Europe.
- • Both CET and GMT transition to daylight saving time (CEST and BST) on the same dates: last Sunday of March and October, maintaining the 1-hour difference year-round.
- • Morning hours work well for meetings: 8-10 AM CET = 7-9 AM GMT, allowing early risers in GMT to join standard European business hours.
- • Afternoon hours offer excellent overlap: 2-4 PM CET = 1-3 PM GMT, with both regions in productive business hours.
- • Use the simple rule: CET time minus 1 hour equals GMT time. This mental math makes it faster than using a converter for quick conversions.
- • London and Paris, the major business hubs, are only 1 hour apart, making Europe's most important business corridor easy to coordinate across.
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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.