JST to GMT
Convert Japan Time — Tokyo to London Time — GMT/BST — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Tokyo, it's 1:00 AM in London. London is 8 hours behind Tokyo. Use the converter above to turn any JST time into GMT, or scan the hour-by-hour table below for the full day.
JST to GMT at a glance
Planning a meeting between Tokyo and London
Tokyo and London share no standard 9-to-5 overlap, so a live call usually means one side taking an early-morning or late-evening slot. The hourly table below helps you pick the least-inconvenient time for everyone.
Hour-by-hour: Tokyo to London
A full day mapped from JST to GMT.
Frequently asked
Is London ahead of or behind Tokyo?
London is 8 hours behind Tokyo.
What is 12:00 PM JST in GMT?
12:00 PM in Tokyo is 4:00 AM in London.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so JST and GMT automatically reflect the correct daylight-saving offset for the current date.