Chicago to London Time Difference
🇺🇸 Chicago is currently 5 hours ahead of 🇬🇧 London. This difference varies between 5h and 6h due to Daylight Saving Time.
Live Calculator
Atin 🇺🇸 Chicago→it will be—in 🇬🇧 London
Open full calculator →DST-accurate · shareable link
Difference
+5h
Business overlap
4h
Distance
6,353 km
Approx. flight
7.5h
Hour-by-Hour: Chicago to London
| 🇺🇸 Chicago | 🇬🇧 London | Note |
|---|---|---|
| 12:00 AM | 5:00 AM | |
| 1:00 AM | 6:00 AM | |
| 2:00 AM | 7:00 AM | |
| 3:00 AM | 8:00 AM | |
| 4:00 AM | 9:00 AM | |
| 5:00 AM | 10:00 AM | |
| 6:00 AM | 11:00 AM | |
| 7:00 AM | 12:00 PM | |
| 8:00 AM | 1:00 PM | |
| 9:00 AM | 2:00 PM | |
| 10:00 AM | 3:00 PM | |
| 11:00 AM | 4:00 PM | |
| 12:00 PM | 5:00 PM | |
| 1:00 PM | 6:00 PM | |
| 2:00 PM | 7:00 PM | |
| 3:00 PM | 8:00 PM | |
| 4:00 PM | 9:00 PM | |
| 5:00 PM | 10:00 PM | |
| 6:00 PM | 11:00 PM | |
| 7:00 PM | 12:00 AM(next day) | Next day |
| 8:00 PM | 1:00 AM(next day) | Next day |
| 9:00 PM | 2:00 AM(next day) | Next day |
| 10:00 PM | 3:00 AM(next day) | Next day |
| 11:00 PM | 4:00 AM(next day) | Next day |
Daylight Saving Time (DST)
Both Chicago and London observe Daylight Saving Time, but they may switch on different dates. The time difference varies between 5 hours ahead and 6 hours ahead throughout the year. Currently, Chicago is 5 hours ahead relative to London.
Min difference
5h
Max difference
6h
Best Meeting Times
There are 4 overlapping business hours between Chicago and London (9 AM – 6 PM in each city).
🇺🇸 Chicago
9:00 AM – 1:00 PM
🇬🇧 London
2:00 PM – 6:00 PM
Frequently Asked Questions
What is the time difference between Chicago and London?
The time difference between Chicago and London is currently 5 hours ahead. Chicago uses CDT (UTC-5), while London uses GMT (UTC+0). This difference varies seasonally due to Daylight Saving Time, ranging from 5 hours ahead to 6 hours ahead.
When it's noon in Chicago, what time is it in London?
When it's 12:00 PM (noon) in Chicago, it is 5:00 PM in London. Use our calculator above to convert any other time.
Does the time difference between Chicago and London change?
Yes, the time difference changes throughout the year. Because Chicago observes Daylight Saving Time, the offset shifts between 5 hours ahead and 6 hours ahead at different times of the year.
What are the best times to schedule a call between Chicago and London?
The best time to call is between 9:00 AM and 1:00 PM in Chicago (which is 2:00 PM – 6:00 PM in London). This 4-hour window falls within business hours in both cities.
Is Chicago ahead or behind London?
Chicago is currently 5 hours behind London.
What time zone is Chicago in?
Chicago is in the America/Chicago time zone, currently using CDT (UTC-5). Chicago observes Daylight Saving Time, so the offset changes twice a year.
What time is midnight in Chicago in London?
When it is midnight (12:00 AM) in Chicago, it is 5:00 AM in London.