🇮🇳 India
IST · UTC+5:30
7:32 PM
UTC+05:30
🕐 IST to CT Converter
Convert India Standard Time (IST) to Central Time (CT). IST is 11 hours 30 minutes ahead of CST (UTC−6) in winter and 10 hours 30 minutes ahead of CDT (UTC−5) in summer. Enter a time below, or scan the hour-by-hour grid and table.
Quick answer: IST is 11 hours 30 minutes ahead of CST (UTC−6) in winter and 10 hours 30 minutes ahead of CDT (UTC−5) in summer. Example: 9:00 PM IST is 9:30 AM CST or 10:30 AM CDT.
If Central is on CST
9:30 PMCST
(previous day)
If Central is on CDT
10:30 PMCDT
(previous day)
Hour by hour: India vs Chicago
🇺🇸 Chicago
Central Time (CST/CDT)
9:02 AM
UTC-05:00
Dark = night · Light = morning/evening · Green = working hours (9–6) · Hatched = weekend. Click an hour to compare the same moment across rows.
IST to CT conversion table
| IST (India) | CST (UTC−6, winter) | CDT (UTC−5, summer) |
|---|---|---|
| 12:00 AM | 12:30 PM (previous day) | 1:30 PM (previous day) |
| 12:30 AM | 1:00 PM (previous day) | 2:00 PM (previous day) |
| 1:00 AM | 1:30 PM (previous day) | 2:30 PM (previous day) |
| 1:30 AM | 2:00 PM (previous day) | 3:00 PM (previous day) |
| 2:00 AM | 2:30 PM (previous day) | 3:30 PM (previous day) |
| 2:30 AM | 3:00 PM (previous day) | 4:00 PM (previous day) |
| 3:00 AM | 3:30 PM (previous day) | 4:30 PM (previous day) |
| 3:30 AM | 4:00 PM (previous day) | 5:00 PM (previous day) |
| 4:00 AM | 4:30 PM (previous day) | 5:30 PM (previous day) |
| 4:30 AM | 5:00 PM (previous day) | 6:00 PM (previous day) |
| 5:00 AM | 5:30 PM (previous day) | 6:30 PM (previous day) |
| 5:30 AM | 6:00 PM (previous day) | 7:00 PM (previous day) |
| 6:00 AM | 6:30 PM (previous day) | 7:30 PM (previous day) |
| 6:30 AM | 7:00 PM (previous day) | 8:00 PM (previous day) |
| 7:00 AM | 7:30 PM (previous day) | 8:30 PM (previous day) |
| 7:30 AM | 8:00 PM (previous day) | 9:00 PM (previous day) |
| 8:00 AM | 8:30 PM (previous day) | 9:30 PM (previous day) |
| 8:30 AM | 9:00 PM (previous day) | 10:00 PM (previous day) |
| 9:00 AM | 9:30 PM (previous day) | 10:30 PM (previous day) |
| 9:30 AM | 10:00 PM (previous day) | 11:00 PM (previous day) |
| 10:00 AM | 10:30 PM (previous day) | 11:30 PM (previous day) |
| 10:30 AM | 11:00 PM (previous day) | 12:00 AM |
| 11:00 AM | 11:30 PM (previous day) | 12:30 AM |
| 11:30 AM | 12:00 AM | 1:00 AM |
| 12:00 PM | 12:30 AM | 1:30 AM |
| 12:30 PM | 1:00 AM | 2:00 AM |
| 1:00 PM | 1:30 AM | 2:30 AM |
| 1:30 PM | 2:00 AM | 3:00 AM |
| 2:00 PM | 2:30 AM | 3:30 AM |
| 2:30 PM | 3:00 AM | 4:00 AM |
| 3:00 PM | 3:30 AM | 4:30 AM |
| 3:30 PM | 4:00 AM | 5:00 AM |
| 4:00 PM | 4:30 AM | 5:30 AM |
| 4:30 PM | 5:00 AM | 6:00 AM |
| 5:00 PM | 5:30 AM | 6:30 AM |
| 5:30 PM | 6:00 AM | 7:00 AM |
| 6:00 PM | 6:30 AM | 7:30 AM |
| 6:30 PM | 7:00 AM | 8:00 AM |
| 7:00 PM | 7:30 AM | 8:30 AM |
| 7:30 PM | 8:00 AM | 9:00 AM |
| 8:00 PM | 8:30 AM | 9:30 AM |
| 8:30 PM | 9:00 AM | 10:00 AM |
| 9:00 PM | 9:30 AM | 10:30 AM |
| 9:30 PM | 10:00 AM | 11:00 AM |
| 10:00 PM | 10:30 AM | 11:30 AM |
| 10:30 PM | 11:00 AM | 12:00 PM |
| 11:00 PM | 11:30 AM | 12:30 PM |
| 11:30 PM | 12:00 PM | 1:00 PM |
CST vs CDT — which one do I use?
US Central Time switches between CST (UTC−6) and CDT (UTC−5). Daylight time (CDT) runs from the second Sunday in March to the first Sunday in November. India never changes, so the IST gap is 11 hours 30 minutes in winter and 10 hours 30 minutes in summer.
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Other time zone conversions
From India time (IST)
To India time (IST)
Frequently asked questions
What is the time difference between IST and CT?
IST is 11 hours 30 minutes ahead of CST (UTC−6) in winter and 10 hours 30 minutes ahead of CDT (UTC−5) in summer. Because India does not observe daylight saving time, the gap changes by one hour when the US clocks change.
How do I convert IST to CT?
Subtract 11 hours 30 minutes to get CST, or 10 hours 30 minutes to get CDT from the IST time. Example: 9:00 PM IST is 9:30 AM CST or 10:30 AM CDT. Use the converter above or the table below.
Is it CST or CDT right now?
US Central Time uses CDT (UTC−5) from the second Sunday in March to the first Sunday in November, and CST (UTC−6) the rest of the year. Most people say "CST" for whichever Central time is in force, so check which one applies on your date. The converter shows both answers.
Does India (IST) have daylight saving time?
No. India uses a single time zone, India Standard Time (UTC+5:30), all year, with no daylight saving. Only the other side of the conversion can change.
Does IST here mean India Standard Time?
Yes. IST is also used for Irish Standard Time and Israel Standard Time, but on this page IST always means India Standard Time (UTC+5:30).