Time zone converter: Australia to UK
Australia spans three main time zones, and the UK swings between two. That means there are six different "Australia to UK" conversions to keep straight, and the right one depends on which Australian state and which side of daylight saving each country is on. This page walks through every combination and links to the live converter so you can drop in your specific cities.
The Australian time zones
Australia has three "primary" zones, plus a couple of half-hour offsets and a couple of states that don't observe daylight saving:
- AEST/AEDT (Australian Eastern Time, UTC+10 / +11). Sydney, Melbourne, Hobart, Canberra. Brisbane stays on AEST year-round.
- ACST/ACDT (Australian Central Time, UTC+9:30 / +10:30). Adelaide. Darwin stays on ACST year-round.
- AWST (Australian Western Time, UTC+8). Perth. No daylight saving.
The UK time zones
The UK is simpler: a single zone that switches with the seasons.
- GMT (UTC+0) — late October to late March.
- BST (UTC+1, British Summer Time) — late March to late October.
How the offset changes through the year
| Australian city | UK summer (BST) | UK winter (GMT) — AU summer (DST) | UK winter (GMT) — AU winter |
|---|---|---|---|
| Sydney / Melbourne / Hobart | +9 h | +11 h | +10 h |
| Brisbane (no DST) | +9 h | +10 h | +10 h |
| Adelaide | +8.5 h | +10.5 h | +9.5 h |
| Darwin (no DST) | +8.5 h | +9.5 h | +9.5 h |
| Perth (no DST) | +7 h | +8 h | +8 h |
Sydney / Melbourne to London
The most common conversion. In the UK winter, Sydney is 11 hours ahead while Sydney is on AEDT, then drops to 10 hours ahead briefly in early April, then 9 hours ahead through the UK summer.
| Sydney | London (winter / summer) | Verdict |
|---|---|---|
| 09:00 | 22:00 / 00:00 (prev day) | Sydney morning, London late night |
| 14:00 | 03:00 / 05:00 | Avoid — UK pre-dawn |
| 18:00 | 07:00 / 09:00 | Sydney evening, UK fresh start |
| 20:00 | 09:00 / 11:00 | Best mutual window |
Perth to London
Perth is much friendlier to the UK than the eastern Australian cities. With no DST and only an 8-hour offset to UK winter time, the practical overlap is wider.
| Perth (AWST) | London (winter / summer) | Verdict |
|---|---|---|
| 14:00 | 06:00 / 07:00 | UK morning, Perth afternoon |
| 16:00 | 08:00 / 09:00 | Best window for both |
| 17:00 | 09:00 / 10:00 | Best window for both |
| 19:00 | 11:00 / 12:00 | UK lunchtime, Perth evening |
Brisbane to London
Brisbane stays on AEST year-round. That makes the UK conversion easier in Australian summer than Sydney is — Brisbane sits one hour behind Sydney in summer, which is one hour closer to the UK.
Things to remember
- UK clocks change twice a year; eastern Australian clocks change twice a year, in the opposite direction.
- Three Australian regions never change clocks: Brisbane (AEST), Darwin (ACST), Perth (AWST).
- The UK observes BST from late March to late October.
- For about a week each year (early April), the offset between Sydney and London is exactly 10 hours rather than 9 or 11.
- Recurring meetings should be anchored to a specific IANA time zone such as
Europe/LondonorAustralia/Sydney— never to a fixed UTC offset.
FAQ
What is the time difference between Australia and the UK right now?
It depends on the city and the season. Use the live UTC Converter with your specific Australian city plus London for the current answer.
Does Brisbane observe daylight saving?
No. Brisbane stays on AEST (UTC+10) all year.
What's the easiest meeting time?
Sydney 19:00–20:00 (= UK 09:00–10:00 GMT or 10:00–11:00 BST) is the most reliable AU east coast / UK overlap.