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Enter the time you want to convert from JST.
JST to GMT Converter
Convert Japan Standard Time (JST) to Greenwich Mean Time (GMT) and compare the time difference between the two time zones.
Local: Wed, Sep 9, 2026 00:00 PM
JST
Japan Standard Time
12:54:32 pm
Sun, Sep 20, 2026
Reference Time Zone
UTC+9
GMT
Greenwich Mean Time
3:54:32 am
Sun, Sep 20, 2026
9 hours behind
UTC±0
JST to GMT Time Difference
GMT is 9 hours behind of JST.
JST to GMT Conversion Table
Use this table as a quick reference when converting common times from JST to GMT.
| JST | GMT |
|---|---|
| 12:00 AM | 3:00 PMprevious day |
| 3:00 AM | 6:00 PMprevious day |
| 6:00 AM | 9:00 PMprevious day |
| 9:00 AM | 12:00 AM |
| 12:00 PM | 3:00 AM |
| 3:00 PM | 6:00 AM |
| 6:00 PM | 9:00 AM |
| 9:00 PM | 12:00 PM |
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
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
How to Convert JST to GMT
Compare the Zones
The converter calculates the corresponding time in GMT.
Check the Date
Remember that a conversion can move the result to the previous or next calendar day.