IST to IRST Time Converter
Use this IST to IRST time converter to compare India and Iran time instantly. IRST is 2 hours behind IST, so 9:00 AM IST becomes 7:00 AM IRST and 5:00 PM IST becomes 3:00 PM IRST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
IST to IRST Quick Facts
Use this IST to IRST converter to compare India and Iran time, check the 2 hours gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 11:00 AM IST / 9:00 AM IRST.
How to Convert IST to IRST
Converting between India Standard Time and Iran Standard Time means accounting for a 2 hours gap — here's how to do it in under 10 seconds with no sign-up.
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.
The equivalent Iran Standard Time (UTC +3:30) time appears immediately. Since IRST is 2 hours behind of IST, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the IRST 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 IRST Converter
When someone in India suggests 11:00 AM IST, that's 9:00 AM IRST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night IST times can land on a different date in IRST because of the 2 hours 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.
Daylight Saving adjustments can widen or narrow the IST–IRST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.
Product launches, sports matches, and webinars are often announced in IST. Convert the event time to IRST so you know exactly when to tune in — with a 2 hours difference, a morning event in India falls during work hours in Iran.
IST to IRST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
India Standard Time to Iran Standard Time full day schedule
| India Standard Time | Iran Standard Time |
|---|---|
| 12:00 AM |
10:00 PM
(previous day)
|
| 1:00 AM |
11:00 PM
(previous day)
|
| 2:00 AM |
12:00 AM
|
| 3:00 AM |
1:00 AM
|
| 4:00 AM |
2:00 AM
|
| 5:00 AM |
3:00 AM
|
| 6:00 AM |
4:00 AM
|
| 7:00 AM |
5:00 AM
|
| 8:00 AM |
6:00 AM
|
| 9:00 AM |
7:00 AM
|
| 10:00 AM |
8:00 AM
|
| 11:00 AM |
9:00 AM
|
| 12:00 PM |
10:00 AM
|
| 1:00 PM |
11:00 AM
|
| 2:00 PM |
12:00 PM
|
| 3:00 PM |
1:00 PM
|
| 4:00 PM |
2:00 PM
|
| 5:00 PM |
3:00 PM
|
| 6:00 PM |
4:00 PM
|
| 7:00 PM |
5:00 PM
|
| 8:00 PM |
6:00 PM
|
| 9:00 PM |
7:00 PM
|
| 10:00 PM |
8:00 PM
|
| 11:00 PM |
9:00 PM
|
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 IRST
Find the time difference from any major zone into Iran Standard Time. Use these pages when scheduling with Iran from a different region.