BST to GMT time difference
GMT is 1 hour behind BST right now. The difference changes between 0 hours and 1 hour during the year because of daylight saving time.
Quick examples: 9:00 AM BST = 8:00 AM GMT · 12:00 PM BST = 11:00 AM GMT · 5:00 PM BST = 4:00 PM GMT
BST to GMT conversion table
| UK Time (BST) | Greenwich Mean Time (GMT) |
|---|---|
| 12:00 AM BST | 11:00 PM GMT (previous day) |
| 1:00 AM BST | 12:00 AM GMT |
| 2:00 AM BST | 1:00 AM GMT |
| 3:00 AM BST | 2:00 AM GMT |
| 4:00 AM BST | 3:00 AM GMT |
| 5:00 AM BST | 4:00 AM GMT |
| 6:00 AM BST | 5:00 AM GMT |
| 7:00 AM BST | 6:00 AM GMT |
| 8:00 AM BST | 7:00 AM GMT |
| 9:00 AM BST | 8:00 AM GMT |
| 10:00 AM BST | 9:00 AM GMT |
| 11:00 AM BST | 10:00 AM GMT |
| 12:00 PM BST | 11:00 AM GMT |
| 1:00 PM BST | 12:00 PM GMT |
| 2:00 PM BST | 1:00 PM GMT |
| 3:00 PM BST | 2:00 PM GMT |
| 4:00 PM BST | 3:00 PM GMT |
| 5:00 PM BST | 4:00 PM GMT |
| 6:00 PM BST | 5:00 PM GMT |
| 7:00 PM BST | 6:00 PM GMT |
| 8:00 PM BST | 7:00 PM GMT |
| 9:00 PM BST | 8:00 PM GMT |
| 10:00 PM BST | 9:00 PM GMT |
| 11:00 PM BST | 10:00 PM GMT |
How to convert BST to GMT
- Pick a date and time in UK Time.
- The matching Greenwich Mean Time time appears instantly on the right.
- Use the ⇄ button to convert GMT to BST instead.
About UK Time and Greenwich Mean Time
UK Time (BST) is used in London, Manchester, Edinburgh and Dublin. Greenwich Mean Time (GMT) is used in the Greenwich meridian (London in winter, Iceland, and West Africa).
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Frequently asked questions
What is the time difference between BST and GMT?
GMT is 1 hour behind BST right now. The difference changes between 0 hours and 1 hour during the year because of daylight saving time.
How do I convert BST to GMT?
Subtract 1 hour to the BST time. For example, 12:00 PM BST is 11:00 AM GMT.
Where is BST used?
UK Time is used in London, Manchester, Edinburgh and Dublin.
Where is GMT used?
Greenwich Mean Time is used in the Greenwich meridian (London in winter, Iceland, and West Africa).
Does this converter handle daylight saving time?
Yes. The converter uses the official time zone database, so it automatically applies daylight saving time for the date you pick.