Paris
London
Convert CET to GMT
Central European Time to Greenwich Mean Time — London is 1 hour behind Paris
Quick Facts
Time Difference
-1 hours
CET Full Name
Central European Time
GMT Full Name
Greenwich Mean Time
CET to GMT Conversion Table
Related Conversions
About CET and GMT Time Zones
CET (Central European Time) is UTC+1 and covers cities like Paris, Berlin, Rome. GMT (Greenwich Mean Time) is UTC+0 and covers cities like London, Dublin, Lisbon.
When it's 12:00 PM (noon) in Paris (CET), it's 11:00 AM in London (GMT). The time difference between CET and GMT is 1 hour — London is behind Paris.
With only a 1-hour difference, Paris and London share nearly a full business day overlap, making scheduling straightforward.
Daylight Saving Time
CET observes Daylight Saving Time and becomes CEST (Central European Summer Time) during summer months, shifting clocks forward by 1 hour to UTC+2.
During DST transitions, the time difference between CET and GMT may shift by ±1 hour. Always verify the current offset above for the most accurate conversion.
Use our world clock tool to compare Paris and London with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between CET and GMT?
London (GMT) is 1 hour behind Paris (CET). The offset is -1 hours.
Is GMT ahead or behind CET?
GMT is 1 hour behind CET. CET is UTC+2 and GMT is UTC+1.
When it's 12:00 PM in Paris, what time is it in London?
When it's 12:00 PM (noon) in Paris (CET), it's 11:00 AM in London (GMT).
When it's 5:00 PM in Paris, what time is it in London?
When it's 5:00 PM in Paris (CET), it's 4:00 PM in London (GMT).
Does CET change for Daylight Saving Time?
Yes. CET (Central European Time, UTC+1) becomes CEST (Central European Summer Time, UTC+2) in summer, shifting clocks forward 1 hour.