GMT to BST Time Converter
Use this GMT to BST time converter to compare United Kingdom and United Kingdom time instantly. BST is 1 hour ahead of GMT, so 9:00 AM GMT becomes 10:00 AM BST and 5:00 PM GMT becomes 6:00 PM BST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
GMT to BST Quick Facts
Use this GMT to BST converter to compare United Kingdom and United Kingdom time, check the 1 hour gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM GMT / 10:00 AM BST.
How to Convert GMT to BST
Converting between Greenwich Mean Time and British Summer Time means accounting for a 1 hour gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Greenwich Mean Time (UTC +0) that you want to convert. Hit "Now" to load the current GMT time instantly, or use "+1h" to step forward and compare.
The equivalent British Summer Time (UTC +1) time appears immediately. Since BST is 1 hour ahead of GMT, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the BST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.
Why Choose Our GMT to BST Converter
When someone in Universal suggests 9:00 AM GMT, that's 10:00 AM BST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night GMT times can land on a different date in BST because of the 1 hour offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.
Daylight Saving adjustments can widen or narrow the GMT–BST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.
Product launches, sports matches, and webinars are often announced in GMT. Convert the event time to BST so you know exactly when to tune in — with a 1 hour difference, a morning event in Universal falls during work hours in United Kingdom.
GMT to BST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Greenwich Mean Time to British Summer Time full day schedule
| Greenwich Mean Time | British Summer Time |
|---|---|
| 12:00 AM |
1:00 AM
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| 1:00 AM |
2:00 AM
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| 2:00 AM |
3:00 AM
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| 3:00 AM |
4:00 AM
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| 4:00 AM |
5:00 AM
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| 5:00 AM |
6:00 AM
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| 6:00 AM |
7:00 AM
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| 7:00 AM |
8:00 AM
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| 8:00 AM |
9:00 AM
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| 9:00 AM |
10:00 AM
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| 10:00 AM |
11:00 AM
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| 11:00 AM |
12:00 PM
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| 12:00 PM |
1:00 PM
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| 1:00 PM |
2:00 PM
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| 2:00 PM |
3:00 PM
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| 3:00 PM |
4:00 PM
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| 4:00 PM |
5:00 PM
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| 5:00 PM |
6:00 PM
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| 6:00 PM |
7:00 PM
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| 7:00 PM |
8:00 PM
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| 8:00 PM |
9:00 PM
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| 9:00 PM |
10:00 PM
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| 10:00 PM |
11:00 PM
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| 11:00 PM |
12:00 AM
(next day)
|
Popular GMT Time Converters
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Convert Other Time Zones to BST
Find the time difference from any major zone into British Summer Time. Use these pages when scheduling with United Kingdom from a different region.