GMT to JST Converter

Japan Standard Time (JST) is 9 hours ahead of Greenwich Mean Time (GMT).

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GMT to JST time difference

JST is 9 hours ahead of GMT.

Quick examples: 9:00 AM GMT = 6:00 PM JST · 12:00 PM GMT = 9:00 PM JST · 5:00 PM GMT = 2:00 AM JST

GMT to JST conversion table

Greenwich Mean Time (GMT)Japan Standard Time (JST)
12:00 AM GMT9:00 AM JST
1:00 AM GMT10:00 AM JST
2:00 AM GMT11:00 AM JST
3:00 AM GMT12:00 PM JST
4:00 AM GMT1:00 PM JST
5:00 AM GMT2:00 PM JST
6:00 AM GMT3:00 PM JST
7:00 AM GMT4:00 PM JST
8:00 AM GMT5:00 PM JST
9:00 AM GMT6:00 PM JST
10:00 AM GMT7:00 PM JST
11:00 AM GMT8:00 PM JST
12:00 PM GMT9:00 PM JST
1:00 PM GMT10:00 PM JST
2:00 PM GMT11:00 PM JST
3:00 PM GMT12:00 AM JST (next day)
4:00 PM GMT1:00 AM JST (next day)
5:00 PM GMT2:00 AM JST (next day)
6:00 PM GMT3:00 AM JST (next day)
7:00 PM GMT4:00 AM JST (next day)
8:00 PM GMT5:00 AM JST (next day)
9:00 PM GMT6:00 AM JST (next day)
10:00 PM GMT7:00 AM JST (next day)
11:00 PM GMT8:00 AM JST (next day)

How to convert GMT to JST

  1. Pick a date and time in Greenwich Mean Time.
  2. The matching Japan Standard Time time appears instantly on the right.
  3. Use the ⇄ button to convert JST to GMT instead.

About Greenwich Mean Time and Japan Standard Time

Greenwich Mean Time (GMT) is used in the Greenwich meridian (London in winter, Iceland, and West Africa). Japan Standard Time (JST) is used in Tokyo, Osaka and all of Japan.

Related time zone converters

JST to GMTGMT to PSTGMT to MSTGMT to CSTGMT to ESTGMT to UTCGMT to BSTPST to JSTMST to JSTCST to JSTEST to JST

Frequently asked questions

What is the time difference between GMT and JST?

JST is 9 hours ahead of GMT.

How do I convert GMT to JST?

Add 9 hours to the GMT time. For example, 12:00 PM GMT is 9:00 PM JST.

Where is GMT used?

Greenwich Mean Time is used in the Greenwich meridian (London in winter, Iceland, and West Africa).

Where is JST used?

Japan Standard Time is used in Tokyo, Osaka and all of Japan.

Does this converter handle daylight saving time?

Yes. The converter uses the official time zone database, so it automatically applies daylight saving time for the date you pick.