BST to GMT Time Converter
Compare BST and GMT instantly. The clocks below stay in sync with the IANA time-zone database, so daylight-saving transitions are handled automatically for both London and GMT.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
24-hour reference table
| BST (London) | GMT (GMT) |
|---|---|
| 12:00 AM | 11:00 PM(Thu, Oct 1) |
| 01:00 AM | 12:00 AM |
| 02:00 AM | 01:00 AM |
| 03:00 AM | 02:00 AM |
| 04:00 AM | 03:00 AM |
| 05:00 AM | 04:00 AM |
| 06:00 AM | 05:00 AM |
| 07:00 AM | 06:00 AM |
| 08:00 AM | 07:00 AM |
| 09:00 AM | 08:00 AM |
| 10:00 AM | 09:00 AM |
| 11:00 AM | 10:00 AM |
| 12:00 PM | 11:00 AM |
| 01:00 PM | 12:00 PM |
| 02:00 PM | 01:00 PM |
| 03:00 PM | 02:00 PM |
| 04:00 PM | 03:00 PM |
| 05:00 PM | 04:00 PM |
| 06:00 PM | 05:00 PM |
| 07:00 PM | 06:00 PM |
| 08:00 PM | 07:00 PM |
| 09:00 PM | 08:00 PM |
| 10:00 PM | 09:00 PM |
| 11:00 PM | 10:00 PM |
Daylight saving time
London observes daylight saving time; GMT does not. Expect a one-hour swing when London starts or ends DST.
Working-hours overlap
10 AM–5 PM BST (9 AM–4 PM GMT) — the shared 9-to-5 window for meetings.
Frequently asked questions
What is the time difference between BST and GMT?+
GMT (UTC+00:00) is currently 1 hours behind BST (UTC+01:00). This page recalculates the offset live from the IANA time-zone database, including any daylight-saving transitions.
Does BST or GMT observe daylight saving time?+
London observes daylight saving time; GMT does not, so the gap changes when London springs forward or falls back. Times on this page always reflect the current local rules.
What are the best meeting hours between London and GMT?+
Standard 9–5 working hours in London and GMT overlap from 10 AM to 5 PM BST (9 AM–4 PM GMT). Schedule calls inside this window to keep both sides in normal business hours.
How do I quickly convert BST to GMT?+
Use the live clocks and 24-hour reference table above. Pick any hour on the BST row to see the matching GMT time. The Event Planner also lets you pick a specific date and share it with attendees.