BST to GMT time zone converter

BST (UTC+01:00)
British Summer Time
06:39:00
Oct 19
  • 12
    AM
  • 1
    AM
  • 2
    AM
  • 3
    AM
  • 4
    AM
  • 5
    AM
  • 6
    AM
  • 7
    AM
  • 8
    AM
  • 9
    AM
  • 10
    AM
  • 11
    AM
  • 12
    PM
  • 1
    PM
  • 2
    PM
  • 3
    PM
  • 4
    PM
  • 5
    PM
  • 6
    PM
  • 7
    PM
  • 8
    PM
  • 9
    PM
  • 10
    PM
  • 11
    PM
GMT (UTC+00:00)
Greenwich Mean Time
05:39:00
Oct 19
  • 11
    PM
  • 12
    AM
  • 1
    AM
  • 2
    AM
  • 3
    AM
  • 4
    AM
  • 5
    AM
  • 6
    AM
  • 7
    AM
  • 8
    AM
  • 9
    AM
  • 10
    AM
  • 11
    AM
  • 12
    PM
  • 1
    PM
  • 2
    PM
  • 3
    PM
  • 4
    PM
  • 5
    PM
  • 6
    PM
  • 7
    PM
  • 8
    PM
  • 9
    PM
  • 10
    PM

This simple BST to GMT time zone converter allows you to quickly and visually understand the time difference between BST (BST) and GMT (GMT).

2026-10-19: 6:39 AM BST

5:39 AM GMT

BST: UTC+01:00 · GMT: UTC+00:00

Just hover over the colored hour tiles, and you’ll instantly see the corresponding time in both zones. The time difference between BST and GMT is 1 hours 0 minutes, with BST being ahead. For example, if it is 6:39 AM BST, the equivalent time in GMT will be 5:39 AM GMT.

BST to GMT hour-by-hour

2026-10-19 · BST
British Summer TimeGreenwich Mean Time
00:00 BST23:00 (-1) GMT
00:30 BST23:30 (-1) GMT
01:00 BST00:00 GMT
01:30 BST00:30 GMT
02:00 BST01:00 GMT
02:30 BST01:30 GMT
03:00 BST02:00 GMT
03:30 BST02:30 GMT
04:00 BST03:00 GMT
04:30 BST03:30 GMT
05:00 BST04:00 GMT
05:30 BST04:30 GMT
06:00 BST05:00 GMT
06:30 BST05:30 GMT
07:00 BST06:00 GMT
07:30 BST06:30 GMT
08:00 BST07:00 GMT
08:30 BST07:30 GMT
09:00 BST08:00 GMT
09:30 BST08:30 GMT
10:00 BST09:00 GMT
10:30 BST09:30 GMT
11:00 BST10:00 GMT
11:30 BST10:30 GMT
12:00 BST11:00 GMT
12:30 BST11:30 GMT
13:00 BST12:00 GMT
13:30 BST12:30 GMT
14:00 BST13:00 GMT
14:30 BST13:30 GMT
15:00 BST14:00 GMT
15:30 BST14:30 GMT
16:00 BST15:00 GMT
16:30 BST15:30 GMT
17:00 BST16:00 GMT
17:30 BST16:30 GMT
18:00 BST17:00 GMT
18:30 BST17:30 GMT
19:00 BST18:00 GMT
19:30 BST18:30 GMT
20:00 BST19:00 GMT
20:30 BST19:30 GMT
21:00 BST20:00 GMT
21:30 BST20:30 GMT
22:00 BST21:00 GMT
22:30 BST21:30 GMT
23:00 BST22:00 GMT
23:30 BST22:30 GMT

British Summer Time

UTC+01:00

Fixed UTC offset. For seasonal local time, select a city or ET, CT, MT, PT.

BST · UTC+01:00

Greenwich Mean Time

UTC+00:00

Fixed UTC offset. For seasonal local time, select a city or ET, CT, MT, PT.

GMT · UTC+00:00

Frequently Asked Questions

2026-10-19 · BST ahead of GMT: 1 hours 0 minutes. BST: UTC+01:00; GMT: UTC+00:00.

2026-10-19 · 06:39 BST → 05:39 GMT.

Weekday overlap (Mon–Fri, 09:00–17:00 in both places): BST: 10:00 BST – 17:00 BST ↔ GMT: 09:00 GMT – 16:00 GMT

BST ahead of GMT: 1 hours 0 minutes

Date → Select range → .ics. 2026-10-19 · 06:39 BST → 05:39 GMT.

BST: Fixed UTC offset. For seasonal local time, select a city or ET, CT, MT, PT. GMT: Fixed UTC offset. For seasonal local time, select a city or ET, CT, MT, PT.