Time difference between London and Chicago

Chicago is 6 hours behind London.

United Kingdom · British Summer Time

8:43 AM

Wednesday, October 21, 2026

United States · Central Daylight Time

2:43 AM

Wednesday, October 21, 2026

London to Chicago time converter

Green rows are office hours in both places; light green rows are when both are awake.

What is the time difference between London and Chicago?

Chicago is 6 hours behind London. London is on UTC+1 and Chicago is on UTC−5.

What time is it in Chicago when it is 9 AM in London?

When it is 9:00 AM in London, it is 3:00 AM in Chicago.

When is the best time to call Chicago from London?

The best time to call or meet is 3:00 PM–6:00 PM in London (9:00 AM–12:00 PM in Chicago), when both places are in normal office hours.

Does the time difference between London and Chicago change?

Yes. Because of daylight saving time, the difference changes on Sunday, October 25, 2026, when Chicago will be 5 hours behind London.

London is 6 hours ahead of Chicago. More: time in London · time in Chicago