Tokyo to London time converter
Enter a date and time in Tokyo to see the matching time and day in London. Useful for business calls and market hours between Japan and the UK.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter date in tokyo and time in tokyo.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
Time in London = time in Tokyo - Tokyo UTC offset + London UTC offset. London is 8 hours behind Tokyo during British Summer Time (last Sunday of March to last Sunday of October) and 9 hours behind the rest of the year.
Example
Inputs: Date in Tokyo = 2026-07-15, Time in Tokyo = 14:00. Result: Time in London: 06:00 Wednesday; Date in London: Wednesday, July 15, 2026 (2026-07-15); London vs Tokyo: -8 hours.
Limits and caveats
- Daylight saving dates come from your device time-zone database, so an outdated device may differ on clock-change days.
- The tool converts clock time between the two cities only; it does not show office hours or public holidays.
Questions about this tool
What is the time difference between Tokyo and London?
London is 8 hours behind Tokyo during British Summer Time (last Sunday of March to last Sunday of October) and 9 hours behind the rest of the year.
Do Tokyo or London change clocks in summer?
Tokyo does not use daylight saving time and stays on UTC+9 all year. London uses British Summer Time, UTC+1, from the last Sunday of March to the last Sunday of October, and UTC+0 the rest of the year. The tool applies this automatically for the date you pick.
If it is 5 pm in Tokyo, what time is it in London?
It is 9 am in London in summer on BST, and 8 am in winter on GMT.