Chicago to London Time Converter
Live clocks — updates every second
Chicago
CST/CDT · UTC-6:00
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London
GMT/BST · UTC+0:00
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Chicago to London — 24-Hour Conversion Table
Standard time offsets · Times shown in 24h format. DST may shift times by 1 hour.
Chicago Timezone
| Timezone | CST/CDT |
| UTC Offset | UTC-6:00 / UTC-5:00 (DST) |
| DST | Yes |
| IANA ID | America/Chicago |
London Timezone
| Timezone | GMT/BST |
| UTC Offset | UTC+0:00 / UTC+1:00 (DST) |
| DST | Yes |
| IANA ID | Europe/London |
Frequently Asked Questions
What is the time difference between Chicago and London? +
Chicago is in the CST/CDT timezone (UTC-6:00 in winter, UTC-5:00 in summer). London is in the GMT/BST timezone (UTC+0:00 in winter, UTC+1:00 in summer). Use the live clocks on this page to see the exact current difference.
How do I convert Chicago time to London time? +
To convert Chicago time (CST/CDT, UTC-6:00) to London time (GMT/BST, UTC+0:00), use the 24-hour conversion table on this page. The table shows every hour in Chicago and the corresponding London time.
Does Chicago or London observe Daylight Saving Time? +
Chicago: Yes, observes DST (clocks shift between UTC-6:00 and UTC-5:00). London: Yes, observes DST (clocks shift between UTC+0:00 and UTC+1:00).
What is the best time to call from Chicago to London? +
Use the conversion table on this page to find overlapping business hours (typically 09:00–18:00) between Chicago and London. The live clocks show the exact current time in both cities to help you schedule calls and meetings.
What timezone is Chicago in? +
Chicago is in the CST/CDT timezone (IANA: America/Chicago). UTC offset: -6:00 in standard time, -5:00 during DST.
What timezone is London in? +
London is in the GMT/BST timezone (IANA: Europe/London). UTC offset: +0:00 in standard time, +1:00 during DST.
New York → London
London → New York