TimezoneToolbox

BST to AEST converter

AEST is usually 9 h ahead of BST. It is 11 h ahead of BST 1 Jan–29 Mar and 25 Oct–31 Dec 2026; It is 10 h ahead of BST 29 Mar–4 Apr and 3 Oct–25 Oct 2026, because of daylight saving time.

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BST to AEST table

For 4 July 2026, when AEST is 9 h ahead of BST. Other dates: see the table on the right.

BSTAEST24-hour
12:00 AM9:00 AM 0:00 → 9:00
1:00 AM10:00 AM 1:00 → 10:00
2:00 AM11:00 AM 2:00 → 11:00
3:00 AM12:00 PM 3:00 → 12:00
4:00 AM1:00 PM 4:00 → 13:00
5:00 AM2:00 PM 5:00 → 14:00
6:00 AM3:00 PM 6:00 → 15:00
7:00 AM4:00 PM 7:00 → 16:00
8:00 AM5:00 PM 8:00 → 17:00
9:00 AM6:00 PM 9:00 → 18:00
10:00 AM7:00 PM 10:00 → 19:00
11:00 AM8:00 PM 11:00 → 20:00
12:00 PM9:00 PM 12:00 → 21:00
1:00 PM10:00 PM 13:00 → 22:00
2:00 PM11:00 PM 14:00 → 23:00
3:00 PM12:00 AM next day15:00 → 0:00
4:00 PM1:00 AM next day16:00 → 1:00
5:00 PM2:00 AM next day17:00 → 2:00
6:00 PM3:00 AM next day18:00 → 3:00
7:00 PM4:00 AM next day19:00 → 4:00
8:00 PM5:00 AM next day20:00 → 5:00
9:00 PM6:00 AM next day21:00 → 6:00
10:00 PM7:00 AM next day22:00 → 7:00
11:00 PM8:00 AM next day23:00 → 8:00

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)AEST vs BST
1 January 202629 March 202611 h ahead of
29 March 20264 April 202610 h ahead of
4 April 20263 October 20269 h ahead of
3 October 202625 October 202610 h ahead of
25 October 202631 December 202611 h ahead of
2027: from (UTC)until (UTC)AEST vs BST
1 January 202728 March 202711 h ahead of
28 March 20273 April 202710 h ahead of
3 April 20272 October 20279 h ahead of
2 October 202731 October 202710 h ahead of
31 October 202731 December 202711 h ahead of

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.

AEST: Australian Eastern Time · AEST time now
Queensland (Brisbane) uses AEST all year; New South Wales, Victoria, the ACT and Tasmania switch to AEDT (UTC+11) from October to April.

Related converters

Questions

What is the time difference between BST and AEST?

AEST is usually 9 h ahead of BST. It is 11 h ahead of BST 1 Jan–29 Mar and 25 Oct–31 Dec 2026; It is 10 h ahead of BST 29 Mar–4 Apr and 3 Oct–25 Oct 2026, because of daylight saving time.

What is 9 am BST in AEST?

9:00 am BST is 6:00 PM AEST, on dates when the usual difference applies. Use the converter above for any specific date.

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.

Which AEST does this page use?

Queensland (Brisbane) uses AEST all year; New South Wales, Victoria, the ACT and Tasmania switch to AEDT (UTC+11) from October to April.