Convert any time between BST and CEST, with a full 24-hour table and the hours when both sides are actually at work.

BST to CEST Time Converter

CEST is 1 hour ahead of BST. BST is UTC+1:00, and CEST is UTC+2:00.

BST
British Summer Time
04:45:30 PM
Sunday, October 11, 2026
UTC+1:00
+1:00
hours difference
⇆ Reverse
CEST
Central European Summer Time
05:45:30 PM
Sunday, October 11, 2026
UTC+2:00

Best Time to Call Between BST and CEST

Both zones are inside normal business hours between 9:00 AM and 4:00 PM BST — that's 10:00 AM to 5:00 PM CEST. That's a 7-hour window.

both at work BST only CEST only neither  —  hours along the strip are BST.

BST to CEST: Full 24-Hour Conversion Table

Shaded rows are working hours; the darker shade marks the hours when both zones are at work.

BSTCESTWorking hours
12:00 AM 1:00 AM —
1:00 AM 2:00 AM —
2:00 AM 3:00 AM —
3:00 AM 4:00 AM —
4:00 AM 5:00 AM —
5:00 AM 6:00 AM —
6:00 AM 7:00 AM —
7:00 AM 8:00 AM —
8:00 AM 9:00 AM CEST only
9:00 AM 10:00 AM Both zones
10:00 AM 11:00 AM Both zones
11:00 AM 12:00 PM Both zones
12:00 PM 1:00 PM Both zones
1:00 PM 2:00 PM Both zones
2:00 PM 3:00 PM Both zones
3:00 PM 4:00 PM Both zones
4:00 PM 5:00 PM BST only
5:00 PM 6:00 PM —
6:00 PM 7:00 PM —
7:00 PM 8:00 PM —
8:00 PM 9:00 PM —
9:00 PM 10:00 PM —
10:00 PM 11:00 PM —
11:00 PM 12:00 AM next day —

What BST and CEST Actually Are

BST — British Summer Time

London, Manchester, Birmingham, Glasgow, and the rest of the UK from late March to late October. Standing at UTC+1:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, October 25, 2026, to GMT. BST also stands for Bangladesh Standard Time (UTC+6). BDT is the clearer label for that one.

British Summer Time began in 1916 as a wartime fuel-saving measure and has run every year since, making it one of the oldest continuous daylight saving schemes in the world.

CEST — Central European Summer Time

Paris, Berlin, Madrid, Rome, Amsterdam, Vienna, Warsaw. Standing at UTC+2:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, October 25, 2026, to CET.

The EU synchronized its daylight saving dates in 1996 so the whole bloc switches on the same weekend, which is why CEST starts and ends everywhere at once.

What This Means in Practice

Both sides change clocks, on different dates

Both regions observe daylight saving but do not switch on the same day, so for a week or two each spring and fall the gap between them is an hour different from the rest of the year. Those short windows are where recurring invitations quietly break.

Close enough to share a working day

At only 1 hour apart, the two working days overlap almost completely. Scheduling is barely constrained by the difference.

Frequently Asked Questions

What is the time difference between BST and CEST?

CEST is 1 hour ahead of BST.

What is 9:00 AM BST in CEST?

9:00 AM BST is 10:00 AM CEST.

What are the best hours to schedule a call between BST and CEST?

Between 9:00 AM and 4:00 PM BST, which is 10:00 AM to 5:00 PM CEST. Both sides are inside normal business hours through that window.

Does the difference between BST and CEST change during the year?

Yes. Both regions observe daylight saving, and they do not switch on the same dates, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, October 25, 2026.

Does BST always mean British Summer Time?

BST also stands for Bangladesh Standard Time (UTC+6). BDT is the clearer label for that one.

Converting between two time zones regularly? Bookmark this page — the clocks update live and the table follows daylight saving automatically.