Chicago to IST time conversion
IST is 10 hours 30 minutes ahead of Chicago. After the next clock change (): IST is 11 hours 30 minutes ahead of 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 IST on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · Chicago → IST
This table converts each hour in Chicago to IST on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| Chicago | IST | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 10:3010:30 AM | |
| 01:001:00 AM | 11:3011:30 AM | |
| 02:002:00 AM | 12:3012:30 PM | |
| 03:003:00 AM | 13:301:30 PM | |
| 04:004:00 AM | 14:302:30 PM | |
| 05:005:00 AM | 15:303:30 PM | |
| 06:006:00 AM | 16:304:30 PM | |
| 07:007:00 AM | 17:305:30 PM | |
| 08:008:00 AM | 18:306:30 PM | |
| 09:009:00 AM | 19:307:30 PM | |
| 10:0010:00 AM | 20:308:30 PM | |
| 11:0011:00 AM | 21:309:30 PM | |
| 12:0012:00 PM | 22:3010:30 PM | |
| 13:001:00 PM | 23:3011:30 PM | |
| 14:002:00 PM | 00:3012:30 AM +1 day | |
| 15:003:00 PM | 01:301:30 AM +1 day | |
| 16:004:00 PM | 02:302:30 AM +1 day | |
| 17:005:00 PM | 03:303:30 AM +1 day | |
| 18:006:00 PM | 04:304:30 AM +1 day | |
| 19:007:00 PM | 05:305:30 AM +1 day | |
| 20:008:00 PM | 06:306:30 AM +1 day | |
| 21:009:00 PM | 07:307:30 AM +1 day | |
| 22:0010:00 PM | 08:308:30 AM +1 day | |
| 23:0011:00 PM | 09:309:30 AM +1 day |
Quick conversion examples
These examples use Chicago (UTC-5) and IST (UTC+5:30); choosing a date applies the local clock changes.
Conversion formula: IST = Chicago + 10h30 · Chicago + 11h30.
| Chicago | IST |
|---|---|
| 6:00 AM Chicago | = 4:30 PM IST |
| 7:00 AM Chicago | = 5:30 PM IST |
| 8:00 AM Chicago | = 6:30 PM IST |
| 9:00 AM Chicago | = 7:30 PM IST |
| 10:00 AM Chicago | = 8:30 PM IST |
| 12:00 PM Chicago | = 10:30 PM IST |
| 3:00 PM Chicago | = 1:30 AM IST (+1 day) |
| 5:00 PM Chicago | = 3:30 AM IST (+1 day) |
| 6:00 PM Chicago | = 4:30 AM IST (+1 day) |
| 8:00 PM Chicago | = 6:30 AM IST (+1 day) |
Overlapping meeting hours
The 08:00–18:00 working days in Chicago and IST do not overlap on 2026-10-21.
Clock changes on both sides, 2026–2028
Chicago and IST have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | Chicago | IST |
|---|---|---|
| 2026 | · 02:00 → 03:00 · 02:00 → 01:00 | No clock changes; UTC+5:30 all year. |
| 2027 | · 02:00 → 03:00 · 02:00 → 01:00 | No clock changes; UTC+5:30 all year. |
| 2028 | · 02:00 → 03:00 · 02:00 → 01:00 | No clock changes; UTC+5:30 all year. |
At the start of 2026, IST is 11 hours 30 minutes ahead of Chicago. The difference changes during the following periods.
- From 2026-03-08 03:00 Chicago until 2026-11-01 01:00 Chicago, IST is 10 hours 30 minutes ahead of Chicago.
- From 2027-03-14 03:00 Chicago until 2027-11-07 01:00 Chicago, IST is 10 hours 30 minutes ahead of Chicago.
- From 2028-03-12 03:00 Chicago until 2028-11-05 01:00 Chicago, IST is 10 hours 30 minutes ahead of Chicago.
Frequently asked questions
What time is 9 AM Chicago in IST?
9:00 AM Chicago = 7:30 PM IST, using UTC-5 and UTC+5:30. Choose a date above for the seasonal local time.
Does the time difference between Chicago and IST change during the year?
Yes. During 2026–2028: IST is 10 hours 30 minutes ahead of Chicago; IST is 11 hours 30 minutes ahead of Chicago. The clock-change table gives the dates for both sides.
How do I tell whether it is day or night in IST?
Read the IST 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 IST?
The 08:00–18:00 working days in Chicago and IST do not overlap.
What is the time difference between Chicago and IST now?
Right now, IST is 10 hours 30 minutes ahead of Chicago. Conversion formula: IST = Chicago + 10h30 · Chicago + 11h30.