--:--:--
—
Tokyo · Osaka · Yokohama
For international scheduling, try the timezone meeting planner.
Difference
GMT vs JST
UTC → UTC
--:--:--
—
London · Reykjavik · Accra
JST to GMT converter
JST to GMT Converter
Convert JST (Tokyo) to GMT (London) now. Live clocks, the current time difference, and a simple meeting window — free.
Asia/Tokyo
—
JST → GMT
To · Greenwich Mean Time
—
Etc/UTC
Interactive diagram
Watch JST convert into GMT
Drag the Japan hour. Watch the GMT clock change.
Japan
9:00 AM JST
—
GMT ← JST
GMT
—
Full-day chart
JST to GMT hourly conversion chart
Full-day table. Tap a row to copy. Labels follow daylight saving.
| Japan | GMT | UTC offsets |
|---|
Meeting times
Best JST to GMT meeting window
Find hours that work on both sides. Then save the slot to your calendar.
Follow along
Step-by-step JST to GMT conversion
Four short steps to convert any JST time to GMT.
Choose JST time
Select any hour in Japan Standard Time. Smart mode uses Asia/Tokyo.
JST to GMT conversion guide
JST to GMT conversion guide
This JST to GMT converter shows Greenwich Mean Time (UTC±0) for any Japan Standard Time (UTC+9) time. Use it to schedule between Tokyo and London. Choose Smart DST for live city clocks. Choose Fixed mode when you only want the JST and GMT labels.
Japan
JST
UTC+9
Tokyo · Osaka · Yokohama
JST vs GMT—
GMT
GMT
UTC±0
London · Reykjavik · Accra
What is JST to GMT conversion?
JST to GMT conversion turns a JST clock into the matching GMT time. Use it for calls, travel, and teams in Tokyo and London.
JST to GMT time difference
GMT is 9 hours behind JST. Subtract 9 hours from the JST time to get GMT. The live clocks at the top show the current JST to GMT gap.
JST vs GMT
JST is UTC+9. GMT is UTC±0. They are different names. If a region uses daylight saving, check the live labels.
JST to GMT now / current time
Need jst to gmt right now? Read the live clocks, or tap Use current time for an instant JST → GMT result.
JST to GMT time difference
Season / context — tap to explore
See how daylight saving can change this pair.
Japan—
—JST → GMT
GMT—
Quick answers
Japan
Japan Standard Time (JST)
UTC+9
Japan Standard Time (JST) is UTC+9. Smart DST uses the city clock Asia/Tokyo so daylight saving stays correct for Tokyo · Osaka · Yokohama.
- Cities: Tokyo · Osaka · Yokohama
- City clock: Asia/Tokyo
- Fixed JST: UTC+9
- On this page it pairs with GMT (UTC±0)
GMT
Greenwich Mean Time (GMT)
UTC±0
Same as UTC+0 here. London often uses BST in summer.
- Cities: London · Reykjavik · Accra
- City clock: Etc/UTC
- Fixed GMT: UTC±0
- From JST: GMT is 9 hours behind JST
JST to GMT FAQ
Common JST to GMT questions
What is the JST to GMT time difference?
GMT is 9 hours behind JST. Fixed labels: JST = UTC+9, GMT = UTC±0. Subtract 9 hours from the JST time to get GMT.
How do I convert JST to GMT quickly?
Subtract 9 hours from the JST time to get GMT. Example: 3:00 AM JST → 6:00 PM GMT. Or use the live JST to GMT converter above.
Is GMT the same as JST?
No. JST is UTC+9 (Tokyo · Osaka · Yokohama). GMT is UTC±0 (London · Reykjavik · Accra).
What is a good JST to GMT meeting time?
GMT is behind. Try 10:00 AM–3:00 PM JST. That is about 1:00 AM–6:00 AM GMT. Use the meeting planner on this page to export an ICS or Google Calendar invite.
What cities use JST and GMT?
JST is common in Tokyo · Osaka · Yokohama. GMT is common in London · Reykjavik · Accra. Smart DST uses Asia/Tokyo and Etc/UTC.