GMT to CET Converter

GMT to CET Converter

Convert Greenwich Mean Time to Central European Time instantly, with daylight saving handled for you.

From: UK Time

GMT

To: Central European Time

--:--
 
CET
Time difference: 1 hour

Full day comparison
Night Daytime Work hours (9–5) Selected time

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What Is the Time Difference Between GMT and CET?

CET (UTC+1) is 1 hour ahead of GMT (UTC+0). So 9:00 AM GMT is 10:00 AM CET, and 12:00 PM GMT is 1:00 PM CET. In summer, Central Europe moves to CEST (UTC+2), which is 2 hours ahead of fixed GMT, but the UK also moves to BST (UTC+1), so UK time and Central European time stay exactly 1 hour apart all year.

How to Convert GMT to CET

You can convert Greenwich Mean Time to Central European Time manually in three steps.

Step 1

Start With the GMT Time

Take the time in GMT. For example, 3:00 PM GMT.

Step 2

Add 1 Hour

3:00 PM plus 1 hour gives 4:00 PM CET.

Step 3

Adjust the Date if Needed

If the result passes midnight, the CET date is one day ahead of the GMT date. For example, 11:30 PM GMT is 12:30 AM the next day in CET.
In summer, when Central Europe is on Central European Summer Time (CEST, UTC+2), add 2 hours to fixed GMT instead. If you are converting from UK clock time, which is on BST in summer, you still add just 1 hour.

GMT to CET Conversion Chart

This chart shows how each hour in GMT converts to Central European Time (CET, winter) and Central European Summer Time (CEST, summer). Use it as a quick reference for calls, flights, live streams, and deadlines.

GMT to CET Conversion Chart (CET = GMT + 1 hour, CEST = GMT + 2 hours)
GMT (12-hour)GMT (24-hour)CET (12-hour)CET (24-hour)CEST (12-hour)CEST (24-hour)
12:00 AM00:001:00 AM01:002:00 AM02:00
1:00 AM01:002:00 AM02:003:00 AM03:00
2:00 AM02:003:00 AM03:004:00 AM04:00
3:00 AM03:004:00 AM04:005:00 AM05:00
4:00 AM04:005:00 AM05:006:00 AM06:00
5:00 AM05:006:00 AM06:007:00 AM07:00
6:00 AM06:007:00 AM07:008:00 AM08:00
7:00 AM07:008:00 AM08:009:00 AM09:00
8:00 AM08:009:00 AM09:0010:00 AM10:00
9:00 AM09:0010:00 AM10:0011:00 AM11:00
10:00 AM10:0011:00 AM11:0012:00 PM12:00
11:00 AM11:0012:00 PM12:001:00 PM13:00
12:00 PM12:001:00 PM13:002:00 PM14:00
1:00 PM13:002:00 PM14:003:00 PM15:00
2:00 PM14:003:00 PM15:004:00 PM16:00
3:00 PM15:004:00 PM16:005:00 PM17:00
4:00 PM16:005:00 PM17:006:00 PM18:00
5:00 PM17:006:00 PM18:007:00 PM19:00
6:00 PM18:007:00 PM19:008:00 PM20:00
7:00 PM19:008:00 PM20:009:00 PM21:00
8:00 PM20:009:00 PM21:0010:00 PM22:00
9:00 PM21:0010:00 PM22:0011:00 PM23:00
10:00 PM22:0011:00 PM23:0012:00 AM (next day)00:00
11:00 PM23:0012:00 AM (next day)00:001:00 AM (next day)01:00

GMT vs BST and CET vs CEST: Why the Time Difference Stays the Same

Both the UK and most of Europe move their clocks for daylight saving time. The UK switches between Greenwich Mean Time (GMT, UTC+0) and British Summer Time (BST, UTC+1). Central Europe switches between Central European Time (CET, UTC+1) and Central European Summer Time (CEST, UTC+2).
Unlike the UK and the US, whose dates differ, the UK and the European Union change their clocks on the same day: the last Sunday of March and the last Sunday of October, both at 01:00 UTC. That is why UK time and Central European time stay 1 hour apart throughout the year. The only exception is if you compare fixed GMT (UTC+0) with CEST in summer, where the gap is 2 hours. Here is how it works in 2026.
GMT/BST vs CET/CEST: Time Difference Through 2026
Period (2026)UK TimeCentral Europe TimeUK vs Central EuropeFixed GMT (UTC+0) vs Central Europe
Jan 1 – Mar 28GMT (UTC+0)CET (UTC+1)1 hour1 hour
Mar 29 – Oct 24BST (UTC+1)CEST (UTC+2)1 hour2 hours
Oct 25 – Dec 31GMT (UTC+0)CET (UTC+1)1 hour1 hour

Tip: If a colleague or client says “GMT” in summer, check whether they mean fixed UTC+0 or the current UK clock time (BST). It is the most common cause of one-hour scheduling mistakes.

Best Time for a Meeting Between the UK and Central Europe

With only a 1-hour gap, the working days of the UK and Central Europe overlap for most of the day. The UK office day starts an hour after Central Europe, and it ends an hour earlier on the CET clock.
Best Meeting Times: UK (GMT) and Central Europe (CET)
UK Time (GMT)Central Europe (CET)Suitability
8:00 AM – 9:00 AM9:00 AM – 10:00 AMFair (early for the UK)
9:00 AM – 12:00 PM10:00 AM – 1:00 PMBest overlap (morning)
12:00 PM – 1:00 PM1:00 PM – 2:00 PMLunch break in both regions
1:00 PM – 4:00 PM2:00 PM – 5:00 PMGood overlap (afternoon)
4:00 PM – 5:00 PM5:00 PM – 6:00 PMFair (late for Central Europe)
5:00 PM onward6:00 PM onwardOutside office hours
A standard 9:00 AM to 5:00 PM workday in the UK runs from 10:00 AM to 6:00 PM in Central Europe.

What Is GMT (Greenwich Mean Time)?

Greenwich Mean Time is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+0 for everyday purposes. The UK uses GMT in winter and switches to British Summer Time (BST, UTC+1) in summer. Some countries, such as Iceland and Ghana, use GMT all year. In the IANA time zone database, UK time is listed as Europe/London.

What Is CET (Central European Time)?

Central European Time is the standard time zone for much of Europe, 1 hour ahead of Coordinated Universal Time (UTC+1). It is used in countries such as Germany, France, Spain, Italy, the Netherlands, Belgium, Switzerland, Austria, Poland, Sweden, Norway, Denmark, the Czech Republic, and Hungary. In summer the region switches to Central European Summer Time (CEST, UTC+2). In the IANA database, examples include Europe/Paris, Europe/Berlin, and Europe/Madrid.

Frequently Asked Questions

How many hours is CET ahead of GMT?

CET (UTC+1) is 1 hour ahead of GMT (UTC+0). In summer, CEST (UTC+2) is 2 hours ahead of GMT, but the UK also moves to BST, so UK time and Central European time stay 1 hour apart all year.

What is 9 AM GMT in CET?

9:00 AM GMT is 10:00 AM CET.

What is 12 PM GMT in CET?

12:00 PM GMT is 1:00 PM CET.

Is CET ahead of or behind GMT?

CET is ahead of GMT. To convert GMT to CET, add 1 hour.

Is the time difference between GMT and CET always 1 hour?

Between UK time and Central European time, yes, because both regions change their clocks on the same dates. Between fixed GMT (UTC+0) and CEST in summer, the difference is 2 hours.

What is the difference between CET and CEST?

CET (UTC+1) is Central European Time, used in winter. CEST (UTC+2) is Central European Summer Time, used from the last Sunday of March to the last Sunday of October.

Which countries use CET?

Countries in CET include Germany, France, Spain, Italy, the Netherlands, Belgium, Switzerland, Austria, Poland, Sweden, Norway, Denmark, the Czech Republic, and Hungary.

How do I convert GMT to CET quickly?

Add 1 hour to the GMT time, or use the converter on this page and the result is shown instantly.
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