London to Chicago time converter

Chicago is currently 6 hours behind of London. London is on UTC+1 and Chicago is on UTC-5.

The difference changes during the year

Because London and Chicago do not start and end daylight saving time together, the gap between them is not constant. Over the next twelve months it takes 2 different values.

Chicago is 6 hours behind of London: 23 August 2026 to 24 October 2026 and 1 November 2026 to 13 March 2027 and 28 March 2027 to 22 August 2027.
Chicago is 5 hours behind of London: 25 October 2026 to 31 October 2026 and 14 March 2027 to 27 March 2027.

Hour by hour while Chicago is 6 hours behind of London. Shaded rows are inside both working days.
London	Chicago
12:00 AM	6:00 PM (previous day)
1:00 AM	7:00 PM (previous day)
2:00 AM	8:00 PM (previous day)
3:00 AM	9:00 PM (previous day)
4:00 AM	10:00 PM (previous day)
5:00 AM	11:00 PM (previous day)
6:00 AM	12:00 AM
7:00 AM	1:00 AM
8:00 AM	2:00 AM
9:00 AM	3:00 AM
10:00 AM	4:00 AM
11:00 AM	5:00 AM
12:00 PM	6:00 AM
1:00 PM	7:00 AM
2:00 PM	8:00 AM
3:00 PM	9:00 AM
4:00 PM	10:00 AM
5:00 PM	11:00 AM
6:00 PM	12:00 PM
7:00 PM	1:00 PM
8:00 PM	2:00 PM
9:00 PM	3:00 PM
10:00 PM	4:00 PM
11:00 PM	5:00 PM

Hour by hour while Chicago is 5 hours behind of London. Shaded rows are inside both working days.
London	Chicago
12:00 AM	7:00 PM (previous day)
1:00 AM	8:00 PM (previous day)
2:00 AM	9:00 PM (previous day)
3:00 AM	10:00 PM (previous day)
4:00 AM	11:00 PM (previous day)
5:00 AM	12:00 AM
6:00 AM	1:00 AM
7:00 AM	2:00 AM
8:00 AM	3:00 AM
9:00 AM	4:00 AM
10:00 AM	5:00 AM
11:00 AM	6:00 AM
12:00 PM	7:00 AM
1:00 PM	8:00 AM
2:00 PM	9:00 AM
3:00 PM	10:00 AM
4:00 PM	11:00 AM
5:00 PM	12:00 PM
6:00 PM	1:00 PM
7:00 PM	2:00 PM
8:00 PM	3:00 PM
9:00 PM	4:00 PM
10:00 PM	5:00 PM
11:00 PM	6:00 PM

Best time for a call

Taking a working day of 9:00 AM to 6:00 PM on both sides, the overlap in London local time is 3:00 PM to 6:00 PM, which is 9:00 AM onward in Chicago.

Questions

How many hours ahead is Chicago of London?

Chicago is 6 hours behind of London right now. That gap is not constant through the year, because the two places change their clocks on different dates.

What time is 9:00 AM in London in Chicago?

9:00 AM in London is 3:00 AM in Chicago.

What is the best time for a meeting between London and Chicago?

Assuming a 9:00 AM to 6:00 PM working day on both sides, the overlap in London local time is 3:00 PM to 6:00 PM.

Local time in each city

For the current time on its own, with the daylight saving dates that apply and the working week in that country, see time in London or time in Chicago.