GMT to JST Converter

JST is 9h 0m ahead of GMT. When it's 12:00 PM GMT, it's 9:00 PM JST.

From

GMT · UTC

4:09:48AM

Greenwich Mean Time

e.g. London

To

JST · UTC+9

1:09:48PM

Japan Standard Time

e.g. Tokyo

Open in World ClockJST → GMT
9:00 AM GMT=6:00 PM JST
12:00 PM GMT=9:00 PM JST
5:00 PM GMT=2:00 AM(+1 day) JST

Hourly conversion (GMT → JST)

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

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

GMT (UTC+0) equals UTC. The UK uses BST (UTC+1) in summer.

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

More GMT conversions

Frequently asked questions

What is the time difference between GMT and JST?
JST is 9h 0m ahead of GMT. GMT is UTC and JST is UTC+9.
What is 12:00 PM GMT in JST?
12:00 PM GMT is 9:00 PM JST.
Does GMT change for daylight saving time?
GMT (UTC+0) equals UTC. The UK uses BST (UTC+1) in summer.