London to Chicago Time Converter
Set a time in London and read it off in Chicago. Drag the slider to move through the day, or add more cities to the board.
Right now it is 7:42 AM in London and 1:42 AM in Chicago. Chicago is 6 hours behind London.
Every hour, side by side
London on the left, Chicago on the right, for a normal working day.
| London | Chicago | Overlap |
|---|---|---|
| 6 am | 12:00 AM | Both asleep |
| 7 am | 1:00 AM | Chicago asleep |
| 8 am | 2:00 AM | Chicago asleep |
| 9 am | 3:00 AM | Chicago asleep |
| 10 am | 4:00 AM | Chicago asleep |
| 11 am | 5:00 AM | Chicago asleep |
| 12 pm | 6:00 AM | Chicago asleep |
| 1 pm | 7:00 AM | Outside 9–5 |
| 2 pm | 8:00 AM | Workable for both |
| 3 pm | 9:00 AM | Both at work |
| 4 pm | 10:00 AM | Both at work |
| 5 pm | 11:00 AM | Workable for both |
| 6 pm | 12:00 PM | Outside 9–5 |
| 7 pm | 1:00 PM | Outside 9–5 |
| 8 pm | 2:00 PM | Outside 9–5 |
| 9 pm | 3:00 PM | Outside 9–5 |
| 10 pm | 4:00 PM | London asleep |
Who is awake when
Each column is one hour of the selected day in London. Click a column to move the whole board to that hour.
Planning a call between London and Chicago
Best window: 3 pm to 5 pm in London (9:00 AM to 11:00 AM in Chicago). In that stretch both cities sit inside core 9-to-5 hours, so neither side takes the call early or late.
Daylight saving
London is on UTC+1 (BST). Clocks go back one hour on Sunday, October 25, 2026, moving it to UTC+0. Between that date and the other city’s own change, the gap between them is an hour different from usual.
Chicago is on UTC−5 (CDT). Clocks go back one hour on Sunday, November 1, 2026, moving it to UTC−6. Between that date and the other city’s own change, the gap between them is an hour different from usual.