Chicago, United States London, United Kingdom
Compare time between Chicago and London
Frequently Asked Questions
Chicago is in the CDT timezone (UTC-5) and London is in the BST timezone (UTC+1). The time difference between them is 6 hours.
Use the timeline above to find overlapping business hours between Chicago and London. The "Best time to meet" card highlights the window where both cities are within working hours (9 AM – 6 PM local time).
Both Chicago and London observe Daylight Saving Time, but their transitions may happen on different dates, which can temporarily change the time difference by ±1 hour.
Click the pencil icon next to the Chicago clock and type any time. The London clock will update instantly, showing the exact corresponding time. You can also pick a date to account for DST changes.