CET to GMT Converter

Category: Time Zone Converters

- June 19, 2025

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Central European Time (CET)

UTC+1 • Berlin, Paris, Rome

Conversion Settings

Configure your timezone conversion preferences

Auto Convert

Daylight Saving Aware

Show UTC Offset

Greenwich Mean Time (GMT)

UTC+0 • London, Dublin, Lisbon

--:--:--

Select a time to convert

Time Difference: --

UTC Offset (CET): +01:00

UTC Offset (GMT): +00:00

DST Status: --

CET/CEST Time: --

GMT Time: --

Time Format:

Current CET/CEST: --:--:--

Current GMT: --:--:--

🇪🇺 CET (UTC+1) is used during winter. CEST (UTC+2) is used during summer daylight saving time from March to October. GMT (UTC+0) is always constant.

CET to GMT Conversion Guide

What is CET to GMT Conversion?

CET to GMT conversion helps you translate time between Central European Time and Greenwich Mean Time zones. CET is UTC+1 during winter and becomes CEST (UTC+2) during daylight saving time from March to October. GMT is always UTC+0 and serves as the reference point for world time zones.

Time Zone Information

Central European Time (CET): Used in most of Central Europe including Germany, France, Italy, and Spain. UTC+1 in winter, becomes CEST (UTC+2) during daylight saving.

Greenwich Mean Time (GMT): The standard time zone that serves as the baseline for all other time zones. Always UTC+0 and never changes.

Time Difference: CET is 1 hour ahead of GMT during winter, and CEST is 2 hours ahead of GMT during summer.

Daylight Saving Time Impact

Winter Period (CET): Last Sunday in October to last Sunday in March - CET is 1 hour ahead of GMT

Summer Period (CEST): Last Sunday in March to last Sunday in October - CEST is 2 hours ahead of GMT

Transition Times: Clocks change at 1:00 AM UTC on transition dates

Common Conversion Examples

Winter Period (CET Active)

CET 12:00 PM → GMT 11:00 AM

CET 6:00 PM → GMT 5:00 PM

CET is 1 hour ahead of GMT during winter

Summer Period (CEST Active)

CEST 12:00 PM → GMT 10:00 AM

CEST 6:00 PM → GMT 4:00 PM

CEST is 2 hours ahead of GMT during summer

Business Hours

CET 9:00 AM → GMT 8:00 AM

CET 5:00 PM → GMT 4:00 PM

Standard European business hours conversion

International Coordination

CET Noon → GMT 11:00 AM

CET Midnight → GMT 11:00 PM (prev day)

Important for global scheduling

Conversion Tips & Best Practices

• CEST begins on the last Sunday in March at 1:00 AM UTC (clocks spring forward to 3:00 AM CEST)

• CEST ends on the last Sunday in October at 1:00 AM UTC (clocks fall back to 2:00 AM CET)

• GMT serves as the global reference point and never changes throughout the year

• Most of Continental Europe follows the same daylight saving schedule as CET/CEST

• Always verify whether Central European Time is currently observing CET or CEST when scheduling

• Use GMT for scientific calculations and international coordination as it remains constant

Convert CET to GMT

If you’ve ever tried to line up a meeting between Berlin and London and found yourself second-guessing the time difference - this is for you. This time conversion calculator takes the guesswork out of switching between Central European Time (CET/CEST) and Greenwich Mean Time (GMT). It’s simple to use, surprisingly flexible, and gets the job done without making you think too hard.

Why this converter saves you more than just time

Scheduling across time zones can be a minefield. CET shifts to CEST every summer, GMT stays put, and sometimes you’re not sure which zone you’re even working in. This tool handles that for you.

It’s built to cover both standard time and daylight saving time automatically, as long as you leave that setting on. Whether you're figuring out when a call should start, double-checking a flight time, or syncing with a remote team, this calculator makes sure you're always working with the right time on both ends.

How it works, step by step

1. Choose your time and date

Start by selecting a date and time in the left-hand section. You can also pick which zone you're starting from—either CET/CEST or GMT—using the dropdown menu.

2. Let it convert automatically—or click

By default, the tool auto-converts your input as soon as you make a change. Prefer manual control? Uncheck "Auto Convert" in the Conversion Settings panel. Then click the big "Convert Time" button when you're ready.

3. Read your results clearly

Your converted time shows up on the right, including the date and whether daylight saving time is active. It even shows the difference in hours and each zone’s current UTC offset if you want that extra detail.

Useful controls you might not notice right away

Swap directions instantly

Need to reverse the conversion—say, from GMT to CET instead? Hit the "Swap" button and the zones will flip. Your selected time stays intact, just viewed from the other side.

Grab the current time

Hit "Now" to automatically fill in the current time from your selected input zone. This is great for quick comparisons between current time in Berlin and London.

Reset to clean slate

Use "Reset" if you want to clear everything and go back to today’s time in CET/CEST. It brings all settings back to their defaults too.

Switch between 12 and 24-hour format

If you’re used to 1:00 PM instead of 13:00, the toggle at the bottom lets you switch between formats. Whatever makes it easier to read at a glance.

Customize how it thinks and displays

The Conversion Settings panel gives you a few checkboxes that change how the tool behaves:

Auto Convert: When this is on, any change in input updates the result immediately.
Daylight Saving Aware: This ensures the CET side knows when to switch to CEST (summer time). Leave it on unless you’re working with historical data or fixed-offset times.
Show UTC Offset: Adds the full offset format (like +01:00 or +02:00) to the display, which can be helpful for precise coordination.

Live clocks keep you anchored

At the bottom of the calculator, you’ll see live digital clocks showing the current time in both CET/CEST and GMT. These refresh every second and follow the same time format you’ve chosen above. They’re great for quick checks, no clicks required.

What happens if something’s off?

If you leave either the date or time empty, the converter won’t run and everything resets. You’ll also see a placeholder instead of a result until you’ve entered valid inputs. That’s just its way of saying “I need a bit more info to help you.”

Also, keep in mind: the CET/CEST label switches based on the date you enter. If it falls between late March and late October, you’ll likely see CEST instead of CET.

Stay on time, wherever you are

Whether you’re juggling remote teams, booking international travel, or just trying to join a webinar at the right hour, this CET to GMT converter keeps your timing straight. It’s fast, reliable, and built with just enough options to suit how you work - without getting complicated. If time zones have ever tripped you up, this tool makes it a lot easier to stay in sync.