Convert JST to IRST Time
Free online converter with current times, time difference, and conversion table between JST and IRST time zones.
Current time in JST: Loading...
Current time in IRST: Loading...
Time difference: -5.5 hours
JST to IRST Conversion Table
This table shows common JST times converted to IRST time:
About JST and IRST Time Zones
JST Time Zone
Full Name: Japan Standard Time
UTC Offset: UTC+9
Current Time: Loading...
Standard time in Japan.
Used in: Japan
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 JST to IRST
Enter JST Time
Enter the JST 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 JST 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 JST times converted to IRST.
Common Uses for JST to IRST Conversion
International Business
Schedule meetings and calls between locations in Japan and Iran time zones.
Travel Planning
Calculate arrival times and plan activities when traveling between Japan 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 JST and IRST is -5.5 hours. This means that when it's noon (12:00 PM) in JST, it's 6:00 AM in IRST.
To convert JST to IRST time, subtract 5.5 hours from the JST time. You can use our converter at the top of this page for instant and accurate conversions.
JST does not observe DST. IRST observes DST.
Partial overlap in business hours.
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.