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IST to AEST Time Converter

Convert time from IST to AEST. Enter any time to see the equivalent AEST time, compare current IST and AEST times side by side, and find overlapping business hours for calls and meetings.

ist India Standard Time
...
aest Australian Eastern Standard Time
...
Select a time to convert

ist to aest Quick Facts

Use this IST to AEST converter to compare India and Australia time, check the 4 hours and 30 minutes gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM IST / 1:30 PM AEST.

Time Difference
Australian Eastern Standard Time is 4 hours and 30 minutes ahead of India Standard Time
Useful when deadlines, handoffs, or calls cross workday boundaries.
Best Call Window
Best overlap starts around 9:00 AM ist and 1:30 PM aest.
Common Use Cases
Useful for remote teams, customer support windows, travel planning, webinars, and same-day deadline handoffs.

How to Convert ist to aest

Converting between India Standard Time and Australian Eastern Standard Time means accounting for a 4 hours and 30 minutes gap — here's how to do it in under 10 seconds with no sign-up.

Enter Your ist Time

Pick the date and time in India Standard Time (UTC +5:30) that you want to convert. Hit "Now" to load the current ist time instantly, or use "+1h" to step forward and compare.

Read the aest Result

The equivalent Australian Eastern Standard Time (UTC +10) time appears immediately. Since aest is 4 hours and 30 minutes ahead of ist, most daytime conversions stay on the same calendar day.

Copy or Fine-Tune

Click "Copy Time" to grab the aest result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.

Why Choose Our ist to aest Converter

Align ist–aest Meetings Instantly

When someone in India suggests 9:00 AM ist, that's 1:30 PM aest. This converter shows the overlap so both sides agree on one slot — no back-and-forth.

Spot Date-Line Shifts at a Glance

Late-night ist times can land on a different date in aest because of the 4 hours and 30 minutes offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.

Handles DST Transitions Automatically

The half-hour offset between ist (UTC +5:30) and aest (UTC +10) already makes mental math tricky — add Daylight Saving Time and the gap can shift further. This converter uses live UTC offsets, so you're always accurate.

Never Miss a ist-Timed Event

Product launches, sports matches, and webinars are often announced in ist. Convert the event time to aest so you know exactly when to tune in — with a 4 hours and 30 minutes difference, a morning event in India falls during work hours in Australia.

ist to aest Time Conversion Chart

Quick-reference conversion table covering every hour of the day at a glance.

Complete 24-Hour Conversion

India Standard Time to Australian Eastern Standard Time full day schedule

12:00 AM
ist
→
4:30 AM
aest
1:00 AM
ist
→
5:30 AM
aest
2:00 AM
ist
→
6:30 AM
aest
3:00 AM
ist
→
7:30 AM
aest
4:00 AM
ist
→
8:30 AM
aest
5:00 AM
ist
→
9:30 AM
aest
6:00 AM
ist
→
10:30 AM
aest
7:00 AM
ist
→
11:30 AM
aest
8:00 AM
ist
→
12:30 PM
aest
9:00 AM
ist
→
1:30 PM
aest
10:00 AM
ist
→
2:30 PM
aest
11:00 AM
ist
→
3:30 PM
aest
12:00 PM
ist
→
4:30 PM
aest
1:00 PM
ist
→
5:30 PM
aest
2:00 PM
ist
→
6:30 PM
aest
3:00 PM
ist
→
7:30 PM
aest
4:00 PM
ist
→
8:30 PM
aest
5:00 PM
ist
→
9:30 PM
aest
6:00 PM
ist
→
10:30 PM
aest
7:00 PM
ist
→
11:30 PM
aest
8:00 PM
ist
→
12:30 AM
aest
(next day)
9:00 PM
ist
→
1:30 AM
aest
(next day)
10:00 PM
ist
→
2:30 AM
aest
(next day)
11:00 PM
ist
→
3:30 AM
aest
(next day)
The two zones in context

IST vs AEST — cities and working rhythm

IST — India Standard Time
Primary cities: Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata

Indian business hours run 10 AM – 7 PM IST typically; IT / BPO shifts commonly extend to cover US and UK working hours, so 3:30 PM – 12:30 AM IST (US overlap) and 12:30 PM – 9 PM IST (UK overlap) are the two second shifts you see most often. Weekend is Saturday-Sunday for most private-sector employers.

AEST — Australian Eastern Standard Time
Primary cities: Sydney (winter), Melbourne (winter), Brisbane (year-round)

Australia's east-coast winter offset (April to October), UTC+10. Brisbane stays on AEST year-round since Queensland has no DST. Big gap with Europe (8-10 h ahead) and North America (14-17 h ahead) — often faster to just email.

Time gap: AEST is 4.5 hours ahead of IST (standard-time offsets — daylight-saving flips shift this by an hour twice a year in most northern-hemisphere zones).

Popular ist Time Converters

Explore more ist conversions for major business and travel corridors. Each page includes a 24-hour chart, time difference summary, and meeting overlap guidance.

Convert Other Time Zones to aest

Find the time difference from any major zone into Australian Eastern Standard Time. Use these pages when scheduling with Australia from a different region.

🌍 Swap direction — AEST to IST Converter