TimezoneToolbox

IST to AEST converter

AEST is usually 5 h 30 min ahead of IST. It is 4 h 30 min ahead of IST 4 Apr–3 Oct 2026, because of daylight saving time.

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IST to AEST table

For 4 July 2026, when AEST is 4 h 30 min ahead of IST. Other dates: see the table on the right.

ISTAEST24-hour
12:00 AM4:30 AM 0:00 → 4:30
1:00 AM5:30 AM 1:00 → 5:30
2:00 AM6:30 AM 2:00 → 6:30
3:00 AM7:30 AM 3:00 → 7:30
4:00 AM8:30 AM 4:00 → 8:30
5:00 AM9:30 AM 5:00 → 9:30
6:00 AM10:30 AM 6:00 → 10:30
7:00 AM11:30 AM 7:00 → 11:30
8:00 AM12:30 PM 8:00 → 12:30
9:00 AM1:30 PM 9:00 → 13:30
10:00 AM2:30 PM 10:00 → 14:30
11:00 AM3:30 PM 11:00 → 15:30
12:00 PM4:30 PM 12:00 → 16:30
1:00 PM5:30 PM 13:00 → 17:30
2:00 PM6:30 PM 14:00 → 18:30
3:00 PM7:30 PM 15:00 → 19:30
4:00 PM8:30 PM 16:00 → 20:30
5:00 PM9:30 PM 17:00 → 21:30
6:00 PM10:30 PM 18:00 → 22:30
7:00 PM11:30 PM 19:00 → 23:30
8:00 PM12:30 AM next day20:00 → 0:30
9:00 PM1:30 AM next day21:00 → 1:30
10:00 PM2:30 AM next day22:00 → 2:30
11:00 PM3:30 AM next day23:00 → 3:30

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 IST
1 January 20264 April 20265 h 30 min ahead of
4 April 20263 October 20264 h 30 min ahead of
3 October 202631 December 20265 h 30 min ahead of
2027: from (UTC)until (UTC)AEST vs IST
1 January 20273 April 20275 h 30 min ahead of
3 April 20272 October 20274 h 30 min ahead of
2 October 202731 December 20275 h 30 min ahead of

IST: India Standard Time · IST time now
IST can also mean Irish Standard Time or Israel Standard Time. This page means India (Asia/Kolkata), which has one zone and no daylight saving time.

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 IST and AEST?

AEST is usually 5 h 30 min ahead of IST. It is 4 h 30 min ahead of IST 4 Apr–3 Oct 2026, because of daylight saving time.

What is 9 am IST in AEST?

9:00 am IST is 1:30 PM AEST, on dates when the usual difference applies. Use the converter above for any specific date.

Which IST does this page use?

IST can also mean Irish Standard Time or Israel Standard Time. This page means India (Asia/Kolkata), which has one zone and no daylight saving time.

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.