BST to GMT Time Converter
Convert British Summer Time to Greenwich Mean Time instantly.
Scroll the timeline to check any hour of the day.
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the BST to GMT time difference works
GMT is the same time as BST. British Summer Time (BST) is the spring-to-autumn daylight time of the United Kingdom.
Greenwich Mean Time (GMT) is the time zone of the United Kingdom and Ireland.
For example, 9:00 AM BST is 9:00 AM GMT.
Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Daylight saving
Both observe
BST to GMT conversion chart
| British Summer Time (BST) |
Greenwich Mean Time (GMT) |
| 12:00 AM |
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 |
9:00 AM |
| 10:00 AM |
10:00 AM |
| 11:00 AM |
11:00 AM |
| 12:00 PM |
12:00 PM |
| 1:00 PM |
1:00 PM |
| 2:00 PM |
2:00 PM |
| 3:00 PM |
3:00 PM |
| 4:00 PM |
4:00 PM |
| 5:00 PM |
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 |
Best time to meet
A standard 9 to 5 workday overlaps from 9:00 AM to 5:00 PM BST (9:00 AM to 5:00 PM GMT). Schedule inside that window to catch both coasts during business hours.
Cities in each time zone
British Summer Time (BST)
LondonManchesterBirminghamGlasgowLiverpoolBristol
Greenwich Mean Time (GMT)
LondonDublinLisbonEdinburghManchester
BST to GMT questions
Is GMT ahead of or behind BST?
GMT is the same time as BST. So 9:00 AM BST is 9:00 AM GMT, and 5:00 PM BST is 5:00 PM GMT.
What time is it in GMT when it is 12:00 PM BST?
When it is 12:00 PM (noon) BST in British Summer Time, it is 12:00 PM GMT in Greenwich Mean Time.
How many hours difference is there between BST and GMT?
BST and GMT are in the same time zone, so there is no time difference.
Do BST and GMT observe daylight saving time?
Both British Summer Time and Greenwich Mean Time observe daylight saving time on the same dates, so they stay in sync all year.
What is the best time to schedule a meeting between BST and GMT?
A standard 9-to-5 workday overlaps from 9:00 AM to 5:00 PM BST (9:00 AM to 5:00 PM GMT). Scheduling inside that window keeps the call during business hours in both British Summer Time and Greenwich Mean Time.
Which cities use BST and GMT?
British Summer Time (BST) covers cities such as London, Manchester, Birmingham, Glasgow, Liverpool, Bristol. Greenwich Mean Time (GMT) covers cities such as London, Dublin, Lisbon, Edinburgh, Manchester.
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