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GMT to JST Converter
Convert Greenwich Mean Time (GMT) to Japan Standard Time (JST) and compare the time difference between the two time zones.
Local: Wed, Sep 9, 2026 00:00 PM
GMT
Greenwich Mean Time
3:54:32 am
Sun, Sep 20, 2026
Reference Time Zone
UTC±0
JST
Japan Standard Time
12:54:32 pm
Sun, Sep 20, 2026
9 hours ahead
UTC+9
GMT to JST Time Difference
JST is 9 hours ahead of GMT.
GMT to JST Conversion Table
Use this table as a quick reference when converting common times from GMT to JST.
| GMT | JST |
|---|---|
| 12:00 AM | 9:00 AM |
| 3:00 AM | 12:00 PM |
| 6:00 AM | 3:00 PM |
| 9:00 AM | 6:00 PM |
| 12:00 PM | 9:00 PM |
| 3:00 PM | 12:00 AMnext day |
| 6:00 PM | 3:00 AMnext day |
| 9:00 PM | 6:00 AMnext day |
About Greenwich Mean Time (GMT)
Greenwich Mean Time (GMT) is a time standard based on the mean solar time at Greenwich, London.
- Abbreviation
- GMT
- UTC Offset
- UTC±0
- Region
- Europe
About Japan Standard Time (JST)
Japan Standard Time (JST) is nine hours ahead of Coordinated Universal Time, UTC+9.
- Abbreviation
- JST
- UTC Offset
- UTC+9
- Region
- Japan
How to Convert GMT to JST
Compare the Zones
The converter calculates the corresponding time in JST.
Check the Date
Remember that a conversion can move the result to the previous or next calendar day.