AEST to GMT Converter | Australia to UK Time

AEST to GMT Conversion Table

Offset: AEST -10 hours = GMT. Applies during standard time. Work hours (9 AM–5 PM) highlighted.

AEST		GMT
00:00		14:00 (−1 day)
01:00		15:00 (−1 day)
02:00		16:00 (−1 day)
03:00		17:00 (−1 day)
04:00		18:00 (−1 day)
05:00		19:00 (−1 day)
06:00		20:00 (−1 day)
07:00		21:00 (−1 day)
08:00		22:00 (−1 day)
09:00		23:00 (−1 day)
10:00		00:00
11:00		01:00
12:00		02:00
13:00		03:00
14:00		04:00
15:00		05:00
16:00		06:00
17:00		07:00
18:00		08:00
19:00		09:00
20:00		10:00
21:00		11:00
22:00		12:00
23:00		13:00

Australian businesses with UK parent companies or clients manage the AEST–GMT gap daily. Law firms, mining conglomerates, and professional services firms in Sydney and Melbourne regularly schedule calls with London counterparts.

GMT is UTC+0 (BST UTC+1 in summer). AEST is UTC+10 (AEDT UTC+11 in the southern-hemisphere summer). The gap fluctuates between 9 and 11 hours across the year because the two countries observe DST in opposite seasons.

From April to October, when Australia is on AEST and the UK is on BST, the gap is at its narrowest: 9 hours. A 5 PM AEST finish maps to 8 AM BST — the best overlap of the year. From November to March, with Australia on AEDT and the UK on GMT, the gap stretches to 11 hours.

Daylight Saving Time: What Changes

Both AEST and GMT observe daylight saving time. Since they typically switch on the same schedule, the 10-hour difference stays constant year-round — except during the brief transition windows when one zone has switched and the other hasn't yet. During those 1-2 weeks, the offset shifts by one hour.

Frequently Asked Questions

What is the time difference between AEST and GMT?

The gap ranges from 9 to 11 hours depending on DST. AEST to GMT is 10 hours. When Australia shifts to AEDT (UTC+11) and the UK stays on GMT, the gap is 11 hours. When the UK moves to BST (UTC+1) and Australia is on AEST, it’s 9 hours.

When is the easiest time to schedule calls between Australia and the UK?

The best period is April–October, when Australia is on AEST and the UK is on BST. The gap narrows to 9 hours, and a 5–7 PM AEST call lands at 8–10 AM BST — comfortable for both sides.

What is the best meeting time for AEST and GMT?

Aim for 5–7 PM AEST (7–9 AM GMT in winter, 8–10 AM BST in summer). This catches the start of the UK workday and the end of the Australian day. Earlier Australian times push the UK into pre-dawn hours.

AEST to GMT Converter | Australia to UK Time

AEST to GMT Conversion Table

Daylight Saving Time: What Changes

Frequently Asked Questions

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Your calendar + time zones, at a glance.

AEST to GMT Converter | Australia to UK Time

AEST to GMT Conversion Table

Daylight Saving Time: What Changes

Frequently Asked Questions

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Your calendar + time zones, at a glance.