🇬🇧 London to 🇺🇸 Chicago time
Chicago is 6 hours behind London
Convert a specific time
When it is in London, it is 03:00 in Chicago.
London to Chicago — hour by hour
| 00:00 | 18:00 −1d |
| 01:00 | 19:00 −1d |
| 02:00 | 20:00 −1d |
| 03:00 | 21:00 −1d |
| 04:00 | 22:00 −1d |
| 05:00 | 23:00 −1d |
| 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 |
Time difference by month (2026)
How far Chicago runs ahead (+) or behind (−) London on the 15th of each month.
| Jan | −6h |
| Feb | −6h |
| Mar | −5h |
| Apr | −6h |
| May | −6h |
| Jun | −6h |
| Jul | −6h |
| Aug | −6h |
| Sep | −6h |
| Oct | −6h |
| Nov | −6h |
| Dec | −6h |
The gap is not constant: because of daylight saving changeovers it shifts in Mar and Apr so double-check around those months when scheduling ahead.
Time difference between London and Chicago
Chicago (America/Chicago) is currently 6 hours behind London (Europe/London). When it is 09:00 in London, it is 03:00 in Chicago. One or both cities observe daylight saving time, so this difference can change with the seasons — the clocks and table on this page always reflect the current rules.
Best time to call between London and Chicago
For a call or meeting, call between 15:00 and 18:00 London time — that is 09:00 to 12:00 in Chicago, inside normal working hours (09:00–18:00) on both sides.
Going the other way?
See the reverse conversion: Chicago to London time, or the city pages for London and Chicago.