GMT to BST Converter
BST is 1 hour ahead of GMT. 9:00 AM GMT = 10:00 AM BST.
BST is 1 hour ahead of GMT. To convert GMT to BST, add 1 hour to the GMT time: 9:00 AM GMT = 10:00 AM BST.
GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year. BST (British Time) is used in United Kingdom from late March to late October.
The UK is on GMT only in winter; in summer it uses BST (UTC+1). BST here means British Summer Time, not Bangladesh Standard Time.
GMT to BST time conversion table
GMT to BST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| GMT | BST | Day |
|---|---|---|
| 12:00 AM GMT | 1:00 AM BST | night |
| 1:00 AM GMT | 2:00 AM BST | night |
| 2:00 AM GMT | 3:00 AM BST | night |
| 3:00 AM GMT | 4:00 AM BST | night |
| 4:00 AM GMT | 5:00 AM BST | night |
| 5:00 AM GMT | 6:00 AM BST | — |
| 6:00 AM GMT | 7:00 AM BST | — |
| 7:00 AM GMT | 8:00 AM BST | — |
| 8:00 AM GMT | 9:00 AM BST | — |
| 9:00 AM GMT | 10:00 AM BST | work hours |
| 10:00 AM GMT | 11:00 AM BST | work hours |
| 11:00 AM GMT | 12:00 PM BST | work hours |
| 12:00 PM GMT | 1:00 PM BST | work hours |
| 1:00 PM GMT | 2:00 PM BST | work hours |
| 2:00 PM GMT | 3:00 PM BST | work hours |
| 3:00 PM GMT | 4:00 PM BST | work hours |
| 4:00 PM GMT | 5:00 PM BST | — |
| 5:00 PM GMT | 6:00 PM BST | — |
| 6:00 PM GMT | 7:00 PM BST | — |
| 7:00 PM GMT | 8:00 PM BST | — |
| 8:00 PM GMT | 9:00 PM BST | — |
| 9:00 PM GMT | 10:00 PM BST | night |
| 10:00 PM GMT | 11:00 PM BST | night |
| 11:00 PM GMT | 12:00 AM BST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert GMT to BST
Add 1 hour to the GMT time to get BST.
Example: 9:00 AM GMT = 10:00 AM BST.
Across midnight: 11:00 PM GMT = 12:00 AM BST (next day). The date changes, so always check the day as well as the hour.
Time difference between GMT and BST
The time difference between GMT and BST is 1 hour all year – BST is ahead of GMT.
GMT and BST during daylight saving time
- GMT does not observe daylight saving time; it stays on UTC+0 all year.
- BST does not observe daylight saving time; it stays on UTC+1 all year.
Best time for a meeting between GMT and BST
GMT and BST share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM GMT lands between 10:00 AM and 5:00 PM BST, inside working hours for both.
GMT to BST FAQ
What is the time difference between GMT and BST?
BST is 1 hour ahead of GMT all year. 9:00 AM GMT = 10:00 AM BST.
What is 9 AM GMT in BST?
9:00 AM GMT is 10:00 AM BST.
What is 12 PM (noon) GMT in BST?
12:00 PM GMT is 1:00 PM BST.
Is BST ahead of or behind GMT?
BST is 1 hour ahead of GMT, so it is later in BST than in GMT.
Does GMT change for daylight saving time?
No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.
Does BST change for daylight saving time?
No. BST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between GMT and BST?
GMT and BST share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM GMT lands between 10:00 AM and 5:00 PM BST, inside working hours for both.
Related conversions
Convert BST to GMT
Convert GMT to other time zones
Convert other time zones to BST
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.