London to Chicago Time Converter
Chicago, US is currently 6 hours behind London, UK. London is on BST (UTC+1) and Chicago is on CDT (UTC-5). The table below converts every hour of the day between the two, and the call planner shows where working hours line up.
Best Time for a Call
Both sides are inside 9:00 AM to 5:00 PM office hours between 3:00 PM and 5:00 PM in London, which is 9:00 AM to 11:00 AM in Chicago.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: London to Chicago
Rows marked office hours fall between 9:00 AM and 5:00 PM in both places. For a specific date, use the interactive converter.
Does the Difference Change During the Year?
The difference between London and Chicago is 6 hours for most of the year. Both places observe daylight saving, so the gap only wobbles for a week or two when their changeover dates do not line up.
Frequently Asked Questions
How many hours behind is Chicago compared to London?
Chicago is currently 6 hours behind London. The difference between London and Chicago is 6 hours for most of the year. Both places observe daylight saving, so the gap only wobbles for a week or two when their changeover dates do not line up.
What time is 9:00 AM in London in Chicago?
9:00 AM in London is 3:00 AM in Chicago.
What is the best time for a call between London and Chicago?
Both sides are inside 9:00 AM to 5:00 PM office hours between 3:00 PM and 5:00 PM in London, which is 9:00 AM to 11:00 AM in Chicago.