Time difference between London and Paris
Paris is 1 hour ahead of London.
Right now it is in London
and in Paris.
When it is 12:00 noon in London, it is 1:00 PM in Paris.
London BST · UTC+1 
Paris CEST · UTC+2 Difference 1 hour — Paris is ahead of London
Best time to call
Both in office hours (9–17) Both awake (7–22) One side asleep
Hours shown in London time. The working-day overlap runs 9:00 AM – 4:00 PM in London, which is 10:00 AM – 5:00 PM in Paris — schedule calls in that window.
Hour-by-hour conversion
| London (BST) | Paris (CEST) | Call quality |
|---|---|---|
| 12:00 AM | 1:00 AM | Off hours |
| 1:00 AM | 2:00 AM | Off hours |
| 2:00 AM | 3:00 AM | Off hours |
| 3:00 AM | 4:00 AM | Off hours |
| 4:00 AM | 5:00 AM | Off hours |
| 5:00 AM | 6:00 AM | Off hours |
| 6:00 AM | 7:00 AM | Off hours |
| 7:00 AM | 8:00 AM | OK |
| 8:00 AM | 9:00 AM | OK |
| 9:00 AM | 10:00 AM | Best |
| 10:00 AM | 11:00 AM | Best |
| 11:00 AM | 12:00 PM | Best |
| 12:00 PM | 1:00 PM | Best |
| 1:00 PM | 2:00 PM | Best |
| 2:00 PM | 3:00 PM | Best |
| 3:00 PM | 4:00 PM | Best |
| 4:00 PM | 5:00 PM | OK |
| 5:00 PM | 6:00 PM | OK |
| 6:00 PM | 7:00 PM | OK |
| 7:00 PM | 8:00 PM | OK |
| 8:00 PM | 9:00 PM | OK |
| 9:00 PM | 10:00 PM | Off hours |
| 10:00 PM | 11:00 PM | Off hours |
| 11:00 PM | 12:00 AM+1 day | Off hours |
Daylight saving time note
The difference between London and Paris stays at 1 hour all year — their clock changes (if any) line up, so no week of the year shifts the gap.
Why the time difference exists
London uses UTC as its standard offset and Paris uses UTC+1. That difference stays constant whatever the season. Paris sits roughly 300 km to the southeast of London.
Expect roughly a 1 hour forward adjustment travelling from London to Paris. The direct distance works out to roughly 1 hour in the air. Line up a shared window before you call and the rest is easy.
