Time difference and converter
Chicago to London Time Difference
See the Chicago to London time difference, convert Chicago time to London time, compare CST/CDT (UTC-6) with GMT/BST (UTC+0), and plan meetings with DST-aware business hours.
London, United Kingdom
Use this page to compare the Chicago to London time difference, check daylight saving context, and plan meeting times across both locations.
Frequently asked questions
What is the Chicago to London time difference?
The live clocks and comparison above show the current Chicago to London time difference. Chicago uses America/Chicago, while London uses Europe/London. Because the cities can follow different daylight saving schedules, their time difference can change during the year.
What time is 9:00 AM in Chicago in London?
Use the date-aware time converter on this page: set Chicago to 9:00 AM and choose the date you need. It will show the corresponding London time using the timezone and daylight saving rules in effect on that date.
How do I convert Chicago time to London time?
Enter a Chicago date and time in the world clock converter . The page converts it to London, preserves the correct calendar day, and applies the relevant timezone and daylight saving rules automatically.
Do Chicago and London observe Daylight Saving Time?
Chicago uses America/Chicago, and London uses Europe/London. Their daylight saving rules can differ by location and date. Check the transition details on this page or the time zone directory before planning around a clock change.
What is the best meeting time between Chicago and London?
The best meeting time depends on working hours in both cities. Use the findtime.io meeting planner on this page to identify overlapping business hours and share a date-aware time with attendees.