Time zone conversion

London to Chicago time converter

Convert London to Chicago for a specific date and time. The result uses date-aware local rules for London and date-aware local rules for Chicago.

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London nowFri, 3:34 AM GMT+1UTC+01:00
Chicago nowThu, 9:34 PM CDTUTC-05:00
Current differenceChicago is 6 hours behind LondonOffsets can change when a city observes daylight saving time.

24-hour reference

London to Chicago time table

This table uses Friday, July 31, 2026 in London. Choose another date in the converter above when daylight saving rules may differ.

LondonChicago
12:00 AMThu 6:00 PM
1:00 AMThu 7:00 PM
2:00 AMThu 8:00 PM
3:00 AMThu 9:00 PM
4:00 AMThu 10:00 PM
5:00 AMThu 11:00 PM
6:00 AMFri 12:00 AM
7:00 AMFri 1:00 AM
8:00 AMFri 2:00 AM
9:00 AMFri 3:00 AM
10:00 AMFri 4:00 AM
11:00 AMFri 5:00 AM
12:00 PMFri 6:00 AM
1:00 PMFri 7:00 AM
2:00 PMFri 8:00 AM
3:00 PMFri 9:00 AM
4:00 PMFri 10:00 AM
5:00 PMFri 11:00 AM
6:00 PMFri 12:00 PM
7:00 PMFri 1:00 PM
8:00 PMFri 2:00 PM
9:00 PMFri 3:00 PM
10:00 PMFri 4:00 PM
11:00 PMFri 5:00 PM

Meeting planner

Working-hour overlap

2 hours in this reference day fall between 9:00 AM and 5:00 PM in both locations.

The first shared working-hour row is 3:00 PM London, which is Fri 9:00 AM Chicago. Green rows in the table mark the full overlap.

Offset rules used

London alternates between GMT and British Summer Time according to Europe/London date rules.

Chicago time follows the America/Chicago IANA rules, including seasonal daylight saving changes.

From time zone

About London

London alternates between GMT and British Summer Time according to Europe/London date rules.

IANA identifier: Europe/London

To time zone

About Chicago

Chicago time follows the America/Chicago IANA rules, including seasonal daylight saving changes.

IANA identifier: America/Chicago

Related routes

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Accuracy

Date-aware time conversion

Offsets are resolved for the local date entered, rather than treating the current offset as permanent. This matters around daylight saving transitions and when locations change rules on different dates.

The converter uses the IANA time-zone database available in the browser. A local clock time skipped during a spring-forward transition is reported as invalid instead of silently changing the requested time.

Questions

London to Chicago FAQ

What is the time difference from London to Chicago?

Chicago is currently 6 hours behind London. City offsets can change with daylight saving time, so use the date-specific converter for another date.

How do I convert London time to Chicago?

Choose the local date and time in London. The converter resolves that wall-clock time with Europe/London, then formats the same instant in America/Chicago.

Does London to Chicago change with daylight saving time?

It can. At least one selection uses date-aware city rules, and the two locations may start or end daylight saving time on different dates.