Chicago & London time difference

London is 6 hours ahead of Chicago. Current time, 24-hour table, DST changes and the best time to call.

London is 6 hours ahead of Chicago.

City Comparison Insights

  • Chicago — United States, America/Chicago (UTC-5), USD, Local time: 18:38
  • London — United Kingdom, Europe/London (UTC+1), GBP, Local time: 00:38

Chicago to London time conversion table (24 hours)

Each hour in Chicago with the matching time in London. +1 is the next day, −1 the previous day.

ChicagoLondon
00:0006:00
01:0007:00
02:0008:00
03:0009:00
04:0010:00
05:0011:00
06:0012:00
07:0013:00
08:0014:00
09:0015:00
10:0016:00
11:0017:00
12:0018:00
13:0019:00
14:0020:00
15:0021:00
16:0022:00
17:0023:00
18:0000:00 +1
19:0001:00 +1
20:0002:00 +1
21:0003:00 +1
22:0004:00 +1
23:0005:00 +1

Best time to call or meet

Business hours overlap: Chicago 09:00–11:00 = London 15:00–17:00.

Daylight saving time (DST)

  • London changes on October 25, 2026 and Chicago on November 1, 2026, so between those dates the difference is 5 hours.
  • Chicago changes on March 14, 2027 and London on March 28, 2027, so between those dates the difference is 5 hours.
  • Chicago: UTC offset changes from UTC−5 to UTC−6 on November 1, 2026.
  • London: UTC offset changes from UTC+1 to UTC±0 on October 25, 2026.

Frequently asked questions

What is the time difference between Chicago and London?

London is 6 hours ahead of Chicago.

What time is it in London when it is 9:00 in Chicago?

When it is 9:00 in Chicago, it is 15:00 in London.

What is the best time to call from Chicago to London?

Business hours overlap: Chicago 09:00–11:00 = London 15:00–17:00.

Does daylight saving time change the time difference between Chicago and London?

London changes on October 25, 2026 and Chicago on November 1, 2026, so between those dates the difference is 5 hours.

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