GMT to JST Converter
GMT in JST Converter
Current Time
Converted Time
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GMT to JST Time Difference Calculator
between GMT and JST: 9 hours ahead
How to convert GMT to JST
To convert from GMT to JST, note that the time difference is 9 hours. Steps: 1. Click the GMT (left) and select the time you want to convert. 2. The corresponding time in JST (right) will update automatically. 3. You can also adjust the date and time by clicking the date or time field. When it's 12:00 PM in GMT, it's 9:00 PM in JST. This conversion accounts for daylight saving time (DST) changes, which can affect the time difference throughout the year
What Current Time Now in GMT?
The current time in GMT is 3:24 PM, December 25, 2025.
What Current Time Now in JST?
The current time in JST is 12:24 AM, December 26, 2025.
GMT to JST Conversion Chart
| GMT (Source Time) | JST (Target Time) |
|---|---|
| 12:00 AM | 9:00 AM |
| 1:00 AM | 10:00 AM |
| 2:00 AM | 11:00 AM |
| 3:00 AM | 12:00 PM |
| 4:00 AM | 1:00 PM |
| 5:00 AM | 2:00 PM |
| 6:00 AM | 3:00 PM |
| 7:00 AM | 4:00 PM |
| 8:00 AM | 5:00 PM |
| 9:00 AM | 6:00 PM |
| 10:00 AM | 7:00 PM |
| 11:00 AM | 8:00 PM |
| 12:00 PM | 9:00 PM |
| 1:00 PM | 10:00 PM |
| 2:00 PM | 11:00 PM |
| 3:00 PM | 12:00 AM |
| 4:00 PM | 1:00 AM |
| 5:00 PM | 2:00 AM |
| 6:00 PM | 3:00 AM |
| 7:00 PM | 4:00 AM |
| 8:00 PM | 5:00 AM |
| 9:00 PM | 6:00 AM |
| 10:00 PM | 7:00 AM |
| 11:00 PM | 8:00 AM |
Why Trust Our Time Zone Converter
Our time zone converter uses the official IANA Time Zone Database, which is maintained by a group of volunteers and is the most accurate source for time zone information worldwide. The converter automatically accounts for daylight saving time changes and provides real-time conversion based on current DST status.
Frequently Asked Questions
What is the time difference between GMT and JST?
The time difference between GMT (Greenwich Mean Time) and JST (Japan Standard Time) is 9 hours. GMT is ahead of JST.
Does GMT observe daylight saving time?
GMT does not observe daylight saving time.
How do I convert a specific time from GMT to JST?
Use the time converter above. Enter the date and time in GMT, and the converter will automatically display the corresponding time in JST.
Is the time difference constant throughout the year?
The time difference may vary if either GMT or JST observes daylight saving time (DST). During DST periods, the offset changes by one hour. Our converter automatically accounts for these changes.