IST to JST Converter

JST is 3h 30m ahead of IST. When it's 12:00 PM IST, it's 3:30 PM JST.

From

IST · UTC+5:30

9:39:51AM

India Standard Time

e.g. Kolkata

To

JST · UTC+9

1:09:51PM

Japan Standard Time

e.g. Tokyo

Open in World ClockJST → IST
9:00 AM IST=12:30 PM JST
12:00 PM IST=3:30 PM JST
5:00 PM IST=8:30 PM JST

Hourly conversion (IST → JST)

ISTJST
12:00 AM3:30 AM
1:00 AM4:30 AM
2:00 AM5:30 AM
3:00 AM6:30 AM
4:00 AM7:30 AM
5:00 AM8:30 AM
6:00 AM9:30 AM
7:00 AM10:30 AM
8:00 AM11:30 AM
9:00 AM12:30 PM
10:00 AM1:30 PM
11:00 AM2:30 PM
12:00 PM3:30 PM
1:00 PM4:30 PM
2:00 PM5:30 PM
3:00 PM6:30 PM
4:00 PM7:30 PM
5:00 PM8:30 PM
6:00 PM9:30 PM
7:00 PM10:30 PM
8:00 PM11:30 PM
9:00 PM12:30 AM(+1 day)
10:00 PM1:30 AM(+1 day)
11:00 PM2:30 AM(+1 day)

Shaded rows are within standard working hours (8am–6pm) on both sides.

IST here is India Standard Time (UTC+5:30). It can also mean Irish Standard Time or Israel Standard Time.

Japan does not observe daylight saving time, so JST (UTC+9) applies year-round.

More IST conversions

Frequently asked questions

What is the time difference between IST and JST?
JST is 3h 30m ahead of IST. IST is UTC+5:30 and JST is UTC+9.
What is 12:00 PM IST in JST?
12:00 PM IST is 3:30 PM JST.
Does IST change for daylight saving time?
IST here is India Standard Time (UTC+5:30). It can also mean Irish Standard Time or Israel Standard Time.