TimezoneToolbox

MST to BST converter

BST is usually 7 h ahead of MST. It is 6 h ahead of MST 8 Mar–29 Mar and 25 Oct–1 Nov 2026, because of daylight saving time.

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MST to BST table

For 12 July 2026, when BST is 7 h ahead of MST. Other dates: see the table on the right.

MSTBST24-hour
12:00 AM7:00 AM 0:00 → 7:00
1:00 AM8:00 AM 1:00 → 8:00
2:00 AM9:00 AM 2:00 → 9:00
3:00 AM10:00 AM 3:00 → 10:00
4:00 AM11:00 AM 4:00 → 11:00
5:00 AM12:00 PM 5:00 → 12:00
6:00 AM1:00 PM 6:00 → 13:00
7:00 AM2:00 PM 7:00 → 14:00
8:00 AM3:00 PM 8:00 → 15:00
9:00 AM4:00 PM 9:00 → 16:00
10:00 AM5:00 PM 10:00 → 17:00
11:00 AM6:00 PM 11:00 → 18:00
12:00 PM7:00 PM 12:00 → 19:00
1:00 PM8:00 PM 13:00 → 20:00
2:00 PM9:00 PM 14:00 → 21:00
3:00 PM10:00 PM 15:00 → 22:00
4:00 PM11:00 PM 16:00 → 23:00
5:00 PM12:00 AM next day17:00 → 0:00
6:00 PM1:00 AM next day18:00 → 1:00
7:00 PM2:00 AM next day19:00 → 2:00
8:00 PM3:00 AM next day20:00 → 3:00
9:00 PM4:00 AM next day21:00 → 4:00
10:00 PM5:00 AM next day22:00 → 5:00
11:00 PM6:00 AM next day23:00 → 6:00

When the difference changes

Computed from the IANA tz database (release 2026c). Governments can change these rules; the live converter uses your browser’s own copy of the database.

2026: from (UTC)until (UTC)BST vs MST
1 January 20268 March 20267 h ahead of
8 March 202629 March 20266 h ahead of
29 March 202625 October 20267 h ahead of
25 October 20261 November 20266 h ahead of
1 November 202631 December 20267 h ahead of
2027: from (UTC)until (UTC)BST vs MST
1 January 202714 March 20277 h ahead of
14 March 202728 March 20276 h ahead of
28 March 202731 October 20277 h ahead of
31 October 20277 November 20276 h ahead of
7 November 202731 December 20277 h ahead of

MST: Mountain Time · MST time now
Arizona (America/Phoenix) stays on MST all year, so for part of the year it matches Pacific Time instead of Denver.

BST: British Summer Time · BST time now
BST only exists from late March to late October. The rest of the year the UK is on GMT. This page follows the London clock either way.

Related converters

Questions

What is the time difference between MST and BST?

BST is usually 7 h ahead of MST. It is 6 h ahead of MST 8 Mar–29 Mar and 25 Oct–1 Nov 2026, because of daylight saving time.

What is 9 am MST in BST?

9:00 am MST is 4:00 PM BST, on dates when the usual difference applies. Use the converter above for any specific date.

Which MST does this page use?

Arizona (America/Phoenix) stays on MST all year, so for part of the year it matches Pacific Time instead of Denver.

Which BST does this page use?

BST only exists from late March to late October. The rest of the year the UK is on GMT. This page follows the London clock either way.