Rio de Janeiro to London
Converting a fixed time. America/Sao_Paulo → Europe/London · 9,278 km (5,762 miles) apart
12:00 pm in Rio de Janeiro is
4:00 pm in London.
12:00 → 16:00 on a 24-hour clock ·
UTC-3 → BST
Rio de Janeiro now
6:23am
UTC-3 · UTC-3
America/Sao_Paulo
Clocks here do not change — this zone stays on the same offset all year.
London now
10:23am
BST · UTC+1
Europe/London
Clocks go back 1 hour on Sunday, 25th October 2026, at 1:59 am local time (1:00 am after the change).
Convert a specific time minutes work, not just whole hours
Hour by hour
| Rio de Janeiro | London | 24h | Good to call? |
|---|---|---|---|
| 12am | 4am | 00:00 → 04:00 | asleep in London |
| 1am | 5am | 01:00 → 05:00 | asleep in London |
| 2am | 6am | 02:00 → 06:00 | asleep in London |
| 3am | 7am | 03:00 → 07:00 | asleep in Rio de Janeiro |
| 4am | 8am | 04:00 → 08:00 | asleep in Rio de Janeiro |
| 5am | 9am | 05:00 → 09:00 | asleep in Rio de Janeiro |
| 6am now | 10am | 06:00 → 10:00 | asleep in Rio de Janeiro |
| 7am | 11am | 07:00 → 11:00 | awake, not at work |
| 8am | 12pm | 08:00 → 12:00 | awake, not at work |
| 9am | 1pm | 09:00 → 13:00 | both at work |
| 10am | 2pm | 10:00 → 14:00 | both at work |
| 11am | 3pm | 11:00 → 15:00 | both at work |
| 12pm | 4pm | 12:00 → 16:00 | both at work |
| 1pm | 5pm | 13:00 → 17:00 | awake, not at work |
| 2pm | 6pm | 14:00 → 18:00 | awake, not at work |
| 3pm | 7pm | 15:00 → 19:00 | awake, not at work |
| 4pm | 8pm | 16:00 → 20:00 | awake, not at work |
| 5pm | 9pm | 17:00 → 21:00 | awake, not at work |
| 6pm | 10pm | 18:00 → 22:00 | asleep in London |
| 7pm | 11pm | 19:00 → 23:00 | asleep in London |
| 8pm | 12am Fri | 20:00 → 00:00 | asleep in London |
| 9pm | 1am Fri | 21:00 → 01:00 | asleep in London |
| 10pm | 2am Fri | 22:00 → 02:00 | asleep in London |
| 11pm | 3am Fri | 23:00 → 03:00 | asleep in London |
Call times
Both places are at work between 9am and 13:00 in Sao Paulo — 1pm to 4pm at the other end.
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both at work
work hours here
awake
asleep
Questions people ask
What time is it in London when it is 12:00 pm in Rio de Janeiro?
4:00 pm in London the same day.
How many hours ahead is London of Rio de Janeiro?
London is 4 hours ahead Rio de Janeiro. That gap is not fixed: it changes when either place starts or ends daylight saving. The table on this page is recalculated for today, so it is already correct for the current season.
What is the best time to call between Rio de Janeiro and London?
Both places are at work between 9am and 13:00 in Sao Paulo — 1pm to 4pm at the other end.