Chicago to United States time conversion
United States is 1 hour ahead of Chicago. After the next clock change (): United States has the same time as Chicago.
Time difference with your location
Chicago is 5 hours behind UTC. Compare with your local time →
Choose a date and time
Choose the local time in Chicago to convert it to United States on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · Chicago → United States
This table converts each hour in Chicago to United States on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| Chicago | United States | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 01:001:00 AM | |
| 01:001:00 AM | 02:002:00 AM | |
| 02:002:00 AM | 03:003:00 AM | |
| 03:003:00 AM | 04:004:00 AM | |
| 04:004:00 AM | 05:005:00 AM | |
| 05:005:00 AM | 06:006:00 AM | |
| 06:006:00 AM | 07:007:00 AM | |
| 07:007:00 AM | 08:008:00 AM | |
| 08:008:00 AM | 09:009:00 AM | ✓ |
| 09:009:00 AM | 10:0010:00 AM | ✓ |
| 10:0010:00 AM | 11:0011:00 AM | ✓ |
| 11:0011:00 AM | 12:0012:00 PM | ✓ |
| 12:0012:00 PM | 13:001:00 PM | ✓ |
| 13:001:00 PM | 14:002:00 PM | ✓ |
| 14:002:00 PM | 15:003:00 PM | ✓ |
| 15:003:00 PM | 16:004:00 PM | ✓ |
| 16:004:00 PM | 17:005:00 PM | ✓ |
| 17:005:00 PM | 18:006:00 PM | |
| 18:006:00 PM | 19:007:00 PM | |
| 19:007:00 PM | 20:008:00 PM | |
| 20:008:00 PM | 21:009:00 PM | |
| 21:009:00 PM | 22:0010:00 PM | |
| 22:0010:00 PM | 23:0011:00 PM | |
| 23:0011:00 PM | 00:0012:00 AM +1 day |
Quick conversion examples
These examples convert local times in Chicago to United States on 2026-10-21.
Conversion formula: United States = Chicago + 1h · Chicago + 2h · Chicago.
| Chicago | United States |
|---|---|
| 6:00 AM Chicago | = 7:00 AM United States |
| 7:00 AM Chicago | = 8:00 AM United States |
| 8:00 AM Chicago | = 9:00 AM United States |
| 9:00 AM Chicago | = 10:00 AM United States |
| 10:00 AM Chicago | = 11:00 AM United States |
| 12:00 PM Chicago | = 1:00 PM United States |
| 3:00 PM Chicago | = 4:00 PM United States |
| 5:00 PM Chicago | = 6:00 PM United States |
| 6:00 PM Chicago | = 7:00 PM United States |
| 8:00 PM Chicago | = 9:00 PM United States |
Overlapping meeting hours
The 08:00–18:00 working day in Chicago and United States overlaps for 9 hours on 2026-10-21.
- Shared working hours
- 08:00–17:00 Chicago · 09:00–18:00 United States
Clock changes on both sides, 2026–2028
Chicago and United States have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | Chicago | United States |
|---|---|---|
| 2026 | · 02:00 → 03:00 · 02:00 → 01:00 | · 02:00 → 03:00 · 02:00 → 01:00 |
| 2027 | · 02:00 → 03:00 · 02:00 → 01:00 | · 02:00 → 03:00 · 02:00 → 01:00 |
| 2028 | · 02:00 → 03:00 · 02:00 → 01:00 | · 02:00 → 03:00 · 02:00 → 01:00 |
At the start of 2026, United States is 1 hour ahead of Chicago. The difference changes during the following periods.
- From 2026-03-08 01:00 Chicago until 2026-03-08 03:00 Chicago, United States is 2 hours ahead of Chicago.
- From 2026-11-01 01:00 Chicago until 2026-11-01 01:00 Chicago, United States has the same time as Chicago.
- From 2027-03-14 01:00 Chicago until 2027-03-14 03:00 Chicago, United States is 2 hours ahead of Chicago.
- From 2027-11-07 01:00 Chicago until 2027-11-07 01:00 Chicago, United States has the same time as Chicago.
- From 2028-03-12 01:00 Chicago until 2028-03-12 03:00 Chicago, United States is 2 hours ahead of Chicago.
- From 2028-11-05 01:00 Chicago until 2028-11-05 01:00 Chicago, United States has the same time as Chicago.
Frequently asked questions
What time is 9 AM Chicago in United States?
9:00 AM Chicago = 10:00 AM United States, using UTC-5 and UTC-4. Choose a date above for the seasonal local time.
Does the time difference between Chicago and United States change during the year?
Yes. During 2026–2028: United States has the same time as Chicago; United States is 1 hour ahead of Chicago; United States is 2 hours ahead of Chicago. The clock-change table gives the dates for both sides.
How do I tell whether it is day or night in United States?
Read the United States clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between Chicago and United States?
The shared 08:00–18:00 working window is 08:00–17:00 Chicago / 09:00–18:00 United States, a total of 9 hours.
What is the time difference between Chicago and United States now?
Right now, United States is 1 hour ahead of Chicago. Conversion formula: United States = Chicago + 1h · Chicago + 2h · Chicago.