What is the difference between AEST and UTC?

UTC is 10 hours behind of AEST. AEST means Australian Eastern Standard Time at UTC+10, and UTC means Coordinated Universal Time at UTC+0.

Which time zone does this page use for AEST?

Australia/Sydney. An abbreviation is not a time zone — it is a label a zone wears for part of the year — so every calculation here uses a named IANA zone and says which one. If you are writing code, use Australia/Sydney rather than the string "AEST".

Does AEST mean anything else?

Yes: Queensland, which never leaves it at UTC+10. Queensland stays on AEST all year while New South Wales and Victoria move to AEDT, so for four months Brisbane and Sydney disagree by an hour.

Is AEST a daylight saving abbreviation?

No. AEST is the standard-time abbreviation. When daylight saving is in force, the same zone uses a different one.

AEST to UTC

AEST sits at UTC+10; UTC sits at UTC+0. That puts UTC 10 hours behind of AEST.

Convert a time

From

Date

Time

Converted time

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The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

Computed on a date when AEST is genuinely in force — using today would be wrong for half the year, because a standard-time abbreviation does not exist in summer.

AEST	UTC
00:00	14:00previous day
01:00	15:00previous day
02:00	16:00previous day
03:00	17:00previous day
04:00	18:00previous day
05:00	19:00previous day
06:00	20:00previous day
07:00	21:00previous day
08:00	22:00previous day
09:00	23:00previous 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

What these abbreviations actually are

	AEST	UTC
Full name	Australian Eastern Standard Time	Coordinated Universal Time
Representative zone	Australia/Sydney	UTC
Offset	UTC+10	UTC+0
Seasonal	Standard time	Standard time
Zone changes in 2026	2	0
Other meanings	1	None in common use

Common questions

What is the difference between AEST and UTC?: UTC is 10 hours behind of AEST. AEST means Australian Eastern Standard Time at UTC+10, and UTC means Coordinated Universal Time at UTC+0.
Which time zone does this page use for AEST?: Australia/Sydney. An abbreviation is not a time zone — it is a label a zone wears for part of the year — so every calculation here uses a named IANA zone and says which one. If you are writing code, use Australia/Sydney rather than the string "AEST".
Does AEST mean anything else?: Yes: Queensland, which never leaves it at UTC+10. Queensland stays on AEST all year while New South Wales and Victoria move to AEDT, so for four months Brisbane and Sydney disagree by an hour.
Is AEST a daylight saving abbreviation?: No. AEST is the standard-time abbreviation. When daylight saving is in force, the same zone uses a different one.