GMT to JST Time Zone Converter — Time Difference Between London and Tokyo
Drag the slider or click the time display to type a specific hour and instantly convert GMT to JST. The time difference between London and Tokyo is 9 hours — Tokyo (JST) is ahead of London (GMT) (UTC+0:00 vs UTC+9:00); for example, 9:00 AM GMT = 6:00 PM JST; to convert, add 9 hours. Use this GMT to JST time zone converter to check the live current time in both cities, browse the 24-hour GMT to JST conversion table, plan international meetings, find the best overlap hours, and account for daylight saving time changes automatically.
GMT
Greenwich Mean Time
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JST
Japan Standard Time
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GMT to JST Time Zone Difference — Hour-by-Hour Conversion Table
Scan each row to convert any GMT time to JST and find the exact time difference between London and Tokyo hour by hour. Amber-highlighted rows mark standard daytime business hours, making it easy to spot overlapping work windows for scheduling international meetings or remote team calls. Tap the arrows to jump between days, click "Today" to reset, and all daylight saving time transitions are handled automatically.
| GMT (London) | JST (Tokyo) |
|---|
What Time Is It Now in London?
Live current local time in London, United Kingdom — GMT (UTC+0:00). Updates every second.
What Time Is It Now in Tokyo?
Live current local time in Tokyo, Japan — JST (UTC+9:00). Updates every second.
GMT to JST Quick Reference
Common business hours in London converted to Tokyo local time — handy for scheduling video calls, client meetings, and international conference calls.
GMT & JST Meeting Planner — Best Overlapping Hours
Use the color-coded conversion table above to find overlapping business hours between London and Tokyo. Amber rows mark standard daytime work hours (8 AM–6 PM local time) — pick a slot that falls in amber on both sides for a meeting time that works for everyone. Since GMT (UTC+0:00) is 9 hours ahead of JST (UTC+9:00), this time zone meeting planner is ideal for scheduling international calls, remote team standups, and cross-border project syncs.
Why Trust This London to Tokyo Time Zone Converter?
ConvertFlash uses the IANA Time Zone Database — the same authoritative source that powers your phone, browser, and every major operating system — so every London to Tokyo conversion handles daylight saving time transitions, half-hour UTC offsets, and historical time zone changes automatically. The live world clock updates every second, and the hour-by-hour conversion table regenerates correctly for any past or future date you select, making it reliable for both real-time checks and advance international scheduling.
GMT — Greenwich Mean Time
London, United Kingdom — UTC offset UTC+0:00
- Abbreviation
- GMT
- UTC Offset
- UTC+0:00
- City
- London
- Country
- United Kingdom
JST — Japan Standard Time
Tokyo, Japan — UTC offset UTC+9:00
- Abbreviation
- JST
- UTC Offset
- UTC+9:00
- City
- Tokyo
- Country
- Japan