IST to AEST Converter
Convert time between India Standard Time (IST) and Australian Eastern Time (AEST/AEDT).
Convert a specific time
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
Time Difference
India Standard Time is 4 hours 30 minutes behind Australian Eastern Time right now.
- Now until Oct 4, 2026: India Standard Time is 4 hours 30 minutes behind Australian Eastern Time (IST → AEST).
- Oct 4, 2026 – Apr 4, 2027: India Standard Time is 5 hours 30 minutes behind Australian Eastern Time (IST → AEDT).
- From Apr 4, 2027: India Standard Time is 4 hours 30 minutes behind Australian Eastern Time (IST → AEST).
Australian Eastern Time is on AEST right now
Best time to call
Convenient overlapping hours on Sunday, September 20, 2026.
| IST (India Standard Time) | AEST (Australian Eastern Time) |
|---|---|
| 9:30 AM | 2:00 PM |
| 10:30 AM | 3:00 PM |
| 11:30 AM | 4:00 PM |
These hours fall within 9 AM–5 PM in both places.
Convert another time zone Plan a meeting across IST and AESTIST to AEST conversion table
For Sunday, September 20, 2026 in India Standard Time.
| IST | AEST |
|---|---|
| 12:00 AM | 4:30 AM |
| 1:00 AM | 5:30 AM |
| 2:00 AM | 6:30 AM |
| 3:00 AM | 7:30 AM |
| 4:00 AM | 8:30 AM |
| 5:00 AM | 9:30 AM |
| 6:00 AM | 10:30 AM |
| 7:00 AM | 11:30 AM |
| 8:00 AM | 12:30 PM |
| 9:00 AM | 1:30 PM |
| 10:00 AM | 2:30 PM |
| 11:00 AM | 3:30 PM |
| 12:00 PM | 4:30 PM |
| 1:00 PM | 5:30 PM |
| 2:00 PM | 6:30 PM |
| 3:00 PM | 7:30 PM |
| 4:00 PM | 8:30 PM |
| 5:00 PM | 9:30 PM |
| 6:00 PM | 10:30 PM |
| 7:00 PM | 11:30 PM |
| 8:00 PM | 12:30 AM(next day) |
| 9:00 PM | 1:30 AM(next day) |
| 10:00 PM | 2:30 AM(next day) |
| 11:00 PM | 3:30 AM(next day) |
About these time zones
India Standard Time (IST)
India Standard Time (IST) is UTC+5:30 and is used across all of India as a single time zone. India does not observe daylight saving time, so IST never changes — but its difference from places that do (like US Eastern Time) changes twice a year.
Australian Eastern Standard Time (AEST)
Australian Eastern Standard Time (AEST) is UTC+10. New South Wales, Victoria, Tasmania and the ACT use AEST in winter and Australian Eastern Daylight Time (AEDT, UTC+11) from the first Sunday in October to the first Sunday in April. Queensland stays on AEST all year.
IST to AEST FAQs
What time is it in AEST when it is 9 AM IST?
On Sunday, September 20, 2026, 9:00 AM IST is 1:30 PM AEST in Australian Eastern Time.
How many hours ahead is IST from AEST?
It depends on the time of year because of daylight saving time. Now until Oct 4, 2026: India Standard Time is 4 hours 30 minutes behind Australian Eastern Time (IST → AEST). Oct 4, 2026 – Apr 4, 2027: India Standard Time is 5 hours 30 minutes behind Australian Eastern Time (IST → AEDT).
Should I use AEST or AEDT?
Australian Eastern Time is on AEST (UTC+10) on Sunday, September 20, 2026. Many people write “AEST” all year, but strictly AEST means Australian Eastern Standard Time (always UTC+10). This converter follows the real local time in Australian Eastern Time, including daylight saving time.
What is the best time for a call between IST and AEST?
On Sunday, September 20, 2026, good options are 9:30 AM IST (2:00 PM AEST), 10:30 AM IST (3:00 PM AEST), 11:30 AM IST (4:00 PM AEST). These fall within normal 9 AM–5 PM working hours in both places.
Does IST change for daylight saving time?
No. IST stays at UTC+5:30 all year.
Does AEST change for daylight saving time?
The region changes: Australian Eastern Time switches between AEST and AEDT, so conversions depend on the date. AEST itself always means UTC+10.