Chicago vs London

Live time comparison and meeting-hour overlap between Chicago, United States and London, United Kingdom.

Chicago
United States
CDT · UTC-05:00 · 14:32
London
United Kingdom
GMT+1 · UTC+01:00 · 20:32

London is 6 hours ahead of Chicago.

If your workday in Chicago runs 9:00 AM to 5:00 PM, the corresponding window in London can be read directly from the conversion table below — overlapping rows are highlighted.

Both cities observe daylight saving time, so the offset stays roughly stable across the year.

Hour-by-hour conversion

Each row shows the same instant in both cities. Rows where standard business hours (9:00–17:00) overlap in both locations are highlighted — these are the best windows to schedule meetings.

ChicagoLondon
12:00 AM6:00 AM
1:00 AM7:00 AM
2:00 AM8:00 AM
3:00 AM9:00 AM
4:00 AM10:00 AM
5:00 AM11:00 AM
6:00 AM12:00 PM
7:00 AM1:00 PM
8:00 AM2:00 PM
9:00 AM3:00 PM
10:00 AM4:00 PM
11:00 AM5:00 PM
12:00 PM6:00 PM
1:00 PM7:00 PM
2:00 PM8:00 PM
3:00 PM9:00 PM
4:00 PM10:00 PM
5:00 PM11:00 PM
6:00 PM12:00 AM (next day)
7:00 PM1:00 AM (next day)
8:00 PM2:00 AM (next day)
9:00 PM3:00 AM (next day)
10:00 PM4:00 AM (next day)
11:00 PM5:00 AM (next day)

We'll add both cities to your grid so you can scrub through the day.

Compare Chicago & London in TZGrid

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Frequently asked questions

What is the time difference between Chicago and London?
London is 6 hours ahead of Chicago.
When do business hours overlap between Chicago and London?
Use the conversion table on this page to find the overlap window. As a rule of thumb, look for the rows where both cities show times between 9:00 and 17:00 — those are the hours when teams in both locations are typically working at the same time.
Do Chicago and London observe daylight saving time?
Both Chicago and London observe daylight saving time, so the offset between them stays roughly stable across the year — though brief periods around DST transitions can shift the gap by an hour.
How can I quickly convert a meeting time between Chicago and London?
Open TZGrid to add both cities to a live grid, then drag or click the hour to scrub through the day and see how times line up across both locations.