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BlogHow it works

CET to GMT Converter

Choose a date and a time in Paris, Berlin or Rome to see the same moment in GMT. The converter handles the move between CET and CEST, so you get the right answer in March and October too.

Central European Time

CETCentral European Time

GMTGreenwich Mean Time

––:––

−1 h / −2 h

From CET or CEST to GMT

Subtract one hour in winter and two hours from late March to late October.

Central European hours in GMT

CET timeCET · GMTCEST · GMT
12:00 AM11:00 PM−1 previous day10:00 PM−1 previous day
1:00 AM12:00 AM11:00 PM−1 previous day
2:00 AM1:00 AM12:00 AM
3:00 AM2:00 AM1:00 AM
4:00 AM3:00 AM2:00 AM
5:00 AM4:00 AM3:00 AM
6:00 AM5:00 AM4:00 AM
7:00 AM6:00 AM5:00 AM
8:00 AM7:00 AM6:00 AM
9:00 AM8:00 AM7:00 AM
10:00 AM9:00 AM8:00 AM
11:00 AM10:00 AM9:00 AM
12:00 PM11:00 AM10:00 AM
1:00 PM12:00 PM11:00 AM
2:00 PM1:00 PM12:00 PM
3:00 PM2:00 PM1:00 PM
4:00 PM3:00 PM2:00 PM
5:00 PM4:00 PM3:00 PM
6:00 PM5:00 PM4:00 PM
7:00 PM6:00 PM5:00 PM
8:00 PM7:00 PM6:00 PM
9:00 PM8:00 PM7:00 PM
10:00 PM9:00 PM8:00 PM
11:00 PM10:00 PM9:00 PM
Each Central European hour with its GMT equivalent in winter (CET) and summer (CEST). −1 marks the previous day.

GMT as a fixed reference

GMT
Also called Greenwich Mean Time · UTC+0
On this page GMT is the fixed time at UTC+0 that never changes for summer, as kept in the IANA time zone database under Etc/GMT. It is not the same as UK time from late March to late October, when Britain switches to BST.

That distinction matters. A Berlin office that says a report is due at 17:00 CEST means 15:00 GMT, but 16:00 in London, because London is also on summer time. If you want the time in the UK rather than the GMT reference, the London clock is the better tool.

Fixed GMT is what aviation, shipping and many broadcast schedules use. Weather services and servers usually say UTC, which for everyday purposes shows the same clock. A train or ferry timetable in Europe, on the other hand, is printed in local time, so a 09:15 departure from Brussels is 08:15 GMT in winter and 07:15 GMT in summer.

When the switch happens

Every EU country changes its clocks at the same instant: 01:00 UTC on the last Sunday in March and on the last Sunday in October, as set by Directive 2000/84/EC. In Paris that is 2:00 AM in spring and 3:00 AM in autumn. The dates for this year and next are listed below.

  1. Jan 1, 2026 – Mar 29, 2026CET UTC+1 · GMT UTC+0Difference: −1 h
  2. Mar 29, 2026 – Oct 25, 2026CEST UTC+2 · GMT UTC+0Difference: −2 h
  3. Oct 25, 2026 – Mar 28, 2027CET UTC+1 · GMT UTC+0Difference: −1 h
  4. Mar 28, 2027 – Oct 31, 2027CEST UTC+2 · GMT UTC+0Difference: −2 h
  5. Oct 31, 2027 – Jan 1, 2028CET UTC+1 · GMT UTC+0Difference: −1 h

Offsets in 2026 – 2027, from the IANA time zone data in your browser's engine

CET to GMT questions

How many hours is CET ahead of GMT?

CET is one hour ahead of GMT. In summer Central Europe is on CEST, which is two hours ahead.

What is 3:00 PM CET in GMT?

2:00 PM GMT. During CEST, 3:00 PM in Paris is 1:00 PM GMT.

Is London always one hour behind Paris?

Yes. The UK and the EU change their clocks at the same instant, so London stays one hour behind Central Europe all year. That differs from fixed GMT, which this page uses.

When does Central Europe switch to CEST?

At 01:00 UTC on the last Sunday in March, and back at 01:00 UTC on the last Sunday in October.