Convert JST to ChST Time
Free online converter with current times, time difference, and conversion table between JST and ChST time zones.
Current time in JST: Loading...
Current time in ChST: Loading...
Time difference: +1 hours
JST to ChST Conversion Table
This table shows common JST times converted to ChST time:
About JST and ChST Time Zones
JST Time Zone
Full Name: Japan Standard Time
UTC Offset: UTC+9
Current Time: Loading...
Standard time in Japan.
Used in: Japan
ChST Time Zone
Full Name: Chamorro Standard Time
UTC Offset: UTC+10
Current Time: Loading...
Standard time in Guam and Northern Mariana Islands.
Used in: Guam, Northern Mariana Islands
How to Convert JST to ChST
Enter JST Time
Enter the JST time you want to convert using the time picker or by typing directly in 24-hour format.
Click Convert
Click the "Convert Time" button to perform the conversion from JST to ChST.
View Result
The equivalent ChST time will be displayed, along with the time difference between the two zones.
Use Conversion Table
For quick reference, you can also use the conversion table below that shows common JST times converted to ChST.
Common Uses for JST to ChST Conversion
International Business
Schedule meetings and calls between locations in Japan and Guam time zones.
Travel Planning
Calculate arrival times and plan activities when traveling between Japan and Guam.
Event Scheduling
Convert event times for international broadcasts, webinars, or sports events between these regions.
Keeping in Touch
Find the best times to call friends, family, or colleagues across these time zones.
Frequently Asked Questions
The time difference between JST and ChST is +1 hours. This means that when it's noon (12:00 PM) in JST, it's 1:00 PM in ChST.
To convert JST to ChST time, add 1 hours to the JST time. You can use our converter at the top of this page for instant and accurate conversions.
JST does not observe DST. ChST does not observe DST.
Business hours largely overlap.
Our converter uses standard time zone offsets. For the most accurate conversions during DST transition periods, please verify the exact dates when DST begins or ends in the relevant regions, as these can vary by year and location.