TimezoneToolbox

CST to BST converter

BST is usually 6 h ahead of CST. It is 5 h ahead of CST 8 Mar–29 Mar and 25 Oct–1 Nov 2026, because of daylight saving time.

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CST to BST table

For 12 July 2026, when BST is 6 h ahead of CST. Other dates: see the table on the right.

CSTBST24-hour
12:00 AM6:00 AM 0:00 → 6:00
1:00 AM7:00 AM 1:00 → 7:00
2:00 AM8:00 AM 2:00 → 8:00
3:00 AM9:00 AM 3:00 → 9:00
4:00 AM10:00 AM 4:00 → 10:00
5:00 AM11:00 AM 5:00 → 11:00
6:00 AM12:00 PM 6:00 → 12:00
7:00 AM1:00 PM 7:00 → 13:00
8:00 AM2:00 PM 8:00 → 14:00
9:00 AM3:00 PM 9:00 → 15:00
10:00 AM4:00 PM 10:00 → 16:00
11:00 AM5:00 PM 11:00 → 17:00
12:00 PM6:00 PM 12:00 → 18:00
1:00 PM7:00 PM 13:00 → 19:00
2:00 PM8:00 PM 14:00 → 20:00
3:00 PM9:00 PM 15:00 → 21:00
4:00 PM10:00 PM 16:00 → 22:00
5:00 PM11:00 PM 17:00 → 23:00
6:00 PM12:00 AM next day18:00 → 0:00
7:00 PM1:00 AM next day19:00 → 1:00
8:00 PM2:00 AM next day20:00 → 2:00
9:00 PM3:00 AM next day21:00 → 3:00
10:00 PM4:00 AM next day22:00 → 4:00
11:00 PM5:00 AM next day23:00 → 5:00

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 CST
1 January 20268 March 20266 h ahead of
8 March 202629 March 20265 h ahead of
29 March 202625 October 20266 h ahead of
25 October 20261 November 20265 h ahead of
1 November 202631 December 20266 h ahead of
2027: from (UTC)until (UTC)BST vs CST
1 January 202714 March 20276 h ahead of
14 March 202728 March 20275 h ahead of
28 March 202731 October 20276 h ahead of
31 October 20277 November 20275 h ahead of
7 November 202731 December 20276 h ahead of

CST: Central Time · CST time now
CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. This page means US Central Time (America/Chicago), which switches to CDT (UTC−5) in summer.

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 CST and BST?

BST is usually 6 h ahead of CST. It is 5 h ahead of CST 8 Mar–29 Mar and 25 Oct–1 Nov 2026, because of daylight saving time.

What is 9 am CST in BST?

9:00 am CST is 3:00 PM BST, on dates when the usual difference applies. Use the converter above for any specific date.

Which CST does this page use?

CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. This page means US Central Time (America/Chicago), which switches to CDT (UTC−5) in summer.

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.