CET to GMT Time Zone Converter
CET is Central European Time — Paris, Berlin, Madrid, and Rome (CET in winter, CEST in summer). GMT is London time. London runs exactly one hour behind Central Europe all year, because both regions change their clocks on the same dates. This converter handles the daylight-saving switch for you on whatever date you pick.
Enter a date and time to convert.
Daylight saving is applied automatically for the date you pick. Labels like PST/EST name the zone (Pacific/Eastern); the real abbreviation shifts to PDT/EDT during daylight saving, and gmt here means London (GMT in winter, BST in summer) while utc stays fixed.
The time difference
London is 1 hour behind Central European Time, and it stays that way in every season. Both sides share the same daylight-saving calendar, so when Europe springs forward in late March, Britain springs forward the same morning — and both fall back together in late October. The gap holds steady at one hour year-round.
A worked example
Take 9:00 AM in Central Europe. On January 15, 2026 that is 8:00 AM in London the same day. On July 15, 2026 it's still 8:00 AM in London — the clock result is identical because the two zones move in lockstep. One value holds all year.
Daylight saving & the abbreviation caveat
CET becomes CEST in summer; London's GMT becomes BST in summer. The labels change on both sides at once, which is why the hour gap never wobbles. This is the tidy case — no awkward two-week windows like you get between Europe and the US. The converter still checks the exact date so the abbreviations shown match the season.
When you'll use it
Good for setting up calls between a European office and a London team, catching UK broadcasts and match kick-offs, timing the London market open, and coordinating remote work across the Channel.
Frequently asked questions
How far behind CET is London?
One hour, all year round. When it's 3:00 PM in Paris it's 2:00 PM in London, in both winter and summer.
Why doesn't the gap change like it does with the US?
London and Central Europe follow the same daylight-saving calendar — both spring forward on March 29, 2026 and fall back on October 25, 2026. Since they move together, the one-hour gap never breaks.
What's the difference between GMT and BST?
GMT is London's winter time; in summer London uses BST (British Summer Time), one hour ahead of GMT. Either way it stays one hour behind Central Europe.