Convert IST to IRST Time
Free online converter with current times, time difference, and conversion table between IST and IRST time zones.
Current time in IST: Loading...
Current time in IRST: Loading...
Time difference: -2 hours
IST to IRST Conversion Table
This table shows common IST times converted to IRST time:
About IST and IRST Time Zones
IST Time Zone
Full Name: Indian Standard Time
UTC Offset: UTC+5.5
Current Time: Loading...
Standard time in India.
Used in: India, Sri Lanka
IRST Time Zone
Full Name: Iran Standard Time
UTC Offset: UTC+3.5
Current Time: Loading...
Standard time in Iran.
Used in: Iran
How to Convert IST to IRST
Enter IST Time
Enter the IST time you want to convert using the time picker or by typing directly in 24-hour format.
Click Convert
Click the "Convert Time" button to perform the conversion from IST to IRST.
View Result
The equivalent IRST time will be displayed, along with the time difference between the two zones.
Use Conversion Table
For quick reference, you can also use the conversion table below that shows common IST times converted to IRST.
Common Uses for IST to IRST Conversion
International Business
Schedule meetings and calls between locations in India and Iran time zones.
Travel Planning
Calculate arrival times and plan activities when traveling between India and Iran.
Event Scheduling
Convert event times for international broadcasts, webinars, or sports events between these regions.
Keeping in Touch
Find the best times to call friends, family, or colleagues across these time zones.
Frequently Asked Questions
The time difference between IST and IRST is -2 hours. This means that when it's noon (12:00 PM) in IST, it's 10:00 AM in IRST.
To convert IST to IRST time, subtract 2.0 hours from the IST time. You can use our converter at the top of this page for instant and accurate conversions.
IST does not observe DST. IRST observes DST.
Business hours largely overlap.
Our converter uses standard time zone offsets. For the most accurate conversions during DST transition periods, please verify the exact dates when DST begins or ends in the relevant regions, as these can vary by year and location.