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Enter the time you want to convert from GMT.
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
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JST
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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.