GMT to JST converter: UK time to Japan time

In 2026 Tokyo is 9 hours ahead of London until 29 March, 8 hours ahead from 29 March to 25 October and 9 hours ahead for the rest of the year, as only London changes its clocks.

London12:00 PMSunday 11 Oct · BST

Tokyo8:00 PMSunday 11 Oct · JST

Tokyo is 8 h ahead London today.

London

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Tokyo

89101112131415161718192021222301234567

9 to 6 working hoursboth at workOverlap: 9 AM–10 AM in London

Your result

Enter your values to see the result.

Daylight saving: local time and fixed GMT and JST

The converter starts with London to Tokyo, using local clock rules. For the standard-time offsets all year, use the fixed GMT and JST button.

These examples use noon on the dates shown. A converted date can be the previous or following day.

Starting date and time	Using local city rules	Using fixed GMT and JST
2026-01-15 12:00	2026-01-15 21:00 (UTC+09:00)	2026-01-15 21:00
2026-07-15 12:00	2026-07-15 20:00 (UTC+09:00)	2026-07-15 21:00

12:00 PM Wednesday 15 Jul in London is 8:00 PM Wednesday 15 Jul in Tokyo (JST, 8 h ahead).

Why daylight saving conversions need a date explains skipped and repeated clock readings. The rules here come from the browser’s time zone data and can lag a government change.