London to Chicago Time Converter

The current time in London and Chicago, every hour converted between them, and when your working days overlap.

Chicago is six hours behind London for most of the year. The Chicago morning overlaps the London afternoon: 8 a.m. in Chicago is 2 p.m. in London, so calls usually sit between 8 a.m. and 11 a.m. Chicago time. Chicago is one hour behind New York, so a meeting set for 9 a.m. New York time starts at 8 a.m. in Chicago.

From October 25 to 31, 2026 London is only five hours ahead, because the UK has moved its clocks back and the US waits until November 1. A recurring 8 a.m. Chicago call is at 1 p.m. in London that week instead of 2 p.m. The same happens from March 14 to 27, 2027.

London to Chicago conversion table

Green rows: both cities are inside 09:00–17:00. The table follows the time difference in effect today.

Does the time difference change during the year?

Yes. The gap is not the same all year, because the two cities change their clocks on different dates. Periods in 2026, starting on the day the clocks change:

Dates the time difference changes in 2026 and 2027

Each row is a clock change in one of the two cities, in that city's local time, and the gap from that day on.

Add the clock-change calendar: every daylight saving change in the US, the EU, the UK and southeast Australia in 2026 and 2027, plus the weeks when the gaps between them shift. To get next year's dates by themselves, subscribe to https://timeatlasworld.com/calendar/clock-changes.ics with your calendar app's "add calendar from URL" option.

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