Convert IRST to JST Time
Free online converter with current times, time difference, and conversion table between IRST and JST time zones.
Current time in IRST: Loading...
Current time in JST: Loading...
Time difference: +5.5 hours
IRST to JST Conversion Table
This table shows common IRST times converted to JST time:
About IRST and JST Time Zones
IRST Time Zone
Full Name: Iran Standard Time
UTC Offset: UTC+3.5
Current Time: Loading...
Standard time in Iran.
Used in: Iran
JST Time Zone
Full Name: Japan Standard Time
UTC Offset: UTC+9
Current Time: Loading...
Standard time in Japan.
Used in: Japan
How to Convert IRST to JST
Enter IRST Time
Enter the IRST 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 IRST to JST.
View Result
The equivalent JST 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 IRST times converted to JST.
Common Uses for IRST to JST Conversion
International Business
Schedule meetings and calls between locations in Iran and Japan time zones.
Travel Planning
Calculate arrival times and plan activities when traveling between Iran and Japan.
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 IRST and JST is +5.5 hours. This means that when it's noon (12:00 PM) in IRST, it's 5:00 PM in JST.
To convert IRST to JST time, add 5.5 hours to the IRST time. You can use our converter at the top of this page for instant and accurate conversions.
IRST observes DST. JST does not observe 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.