UK to Chicago Time Converter
About this conversion
Chicago is the main Central Time city. It is one hour behind New York, so UK teams that already work with the east coast can usually add Chicago colleagues to the same late-afternoon call.
When the time difference changes
Changes over the next two years, from daylight saving on either side.
- Sunday, 25 October 2026: Chicago becomes 5 hours behind UK.
- Sunday, 1 November 2026: Chicago becomes 6 hours behind UK.
- Sunday, 14 March 2027: Chicago becomes 5 hours behind UK.
- Sunday, 28 March 2027: Chicago becomes 6 hours behind UK.
- Sunday, 31 October 2027: Chicago becomes 5 hours behind UK.
- Sunday, 7 November 2027: Chicago becomes 6 hours behind UK.
- Sunday, 12 March 2028: Chicago becomes 5 hours behind UK.
- Sunday, 26 March 2028: Chicago becomes 6 hours behind UK.
Best time to call or meet
15:00 to 17:00 UK is 09:00 to 11:00 Chicago, 2 hours of shared 09:00 to 17:00 time.
Common times
- 06:00 UK = 00:00 Chicago
- 09:00 UK = 03:00 Chicago
- 12:00 UK = 06:00 Chicago
- 15:00 UK = 09:00 Chicago
- 17:00 UK = 11:00 Chicago
- 20:00 UK = 14:00 Chicago
UK to Chicago hour-by-hour table
Highlighted rows fall within 09:00 to 17:00 on both sides.
| UK | Chicago |
|---|---|
| 00:00 | 18:00 (previous day) |
| 01:00 | 19:00 (previous day) |
| 02:00 | 20:00 (previous day) |
| 03:00 | 21:00 (previous day) |
| 04:00 | 22:00 (previous day) |
| 05:00 | 23:00 (previous day) |
| 06:00 | 00:00 |
| 07:00 | 01:00 |
| 08:00 | 02:00 |
| 09:00 | 03:00 |
| 10:00 | 04:00 |
| 11:00 | 05:00 |
| 12:00 | 06:00 |
| 13:00 | 07:00 |
| 14:00 | 08:00 |
| 15:00 | 09:00 |
| 16:00 | 10:00 |
| 17:00 | 11:00 |
| 18:00 | 12:00 |
| 19:00 | 13:00 |
| 20:00 | 14:00 |
| 21:00 | 15:00 |
| 22:00 | 16:00 |
| 23:00 | 17:00 |
Related conversions
Clock change guides
- What Is Daylight Saving Time (DST)? A Plain-English GuideWhat daylight saving time is, how it works in the UK, Europe and the US, why it exists, its history, who uses it and the argument over scrapping it.
- Why Do the Clocks Go Back in October? The Real ReasonThe clocks go back in autumn to return the UK to GMT, so winter mornings are lighter. The history, the rule, what time it happens and what changes for you.
- When Do the Clocks Go Forward Again After Going Back?When the UK clocks go forward again after the autumn change, how long the UK stays on GMT, when evenings get lighter and how to remember to reset your clocks.
Frequently asked questions
What is 15:00 UK in Chicago?
15:00 UK is 09:00 Chicago at the moment. The answer can change by an hour when either side changes its clocks.
What are the shared working hours for UK and Chicago?
15:00 to 17:00 UK is 09:00 to 11:00 Chicago, 2 hours of shared 09:00 to 17:00 time.
When does the UK to Chicago time difference change?
It next changes on Sunday, 25 October 2026, when the gap becomes 5 hours behind.