Mumbai
Chicago
Convert IST to CST
India Standard Time to Central Standard Time — Chicago is 10.5 hours behind Mumbai
Quick Facts
Time Difference
-10.5 hours
IST Full Name
India Standard Time
CST Full Name
Central Standard Time
IST to CST Conversion Table
Related Conversions
About IST and CST Time Zones
IST (India Standard Time) is UTC+5:30 and covers cities like Mumbai, Delhi, Bangalore. CST (Central Standard Time) is UTC-6 and covers cities like Chicago, Dallas, Houston.
When it's 12:00 PM (noon) in Mumbai (IST), it's 1:30 AM in Chicago (CST). The time difference between IST and CST is 10.5 hours — Chicago is behind Mumbai.
The 11.5-hour difference makes real-time overlap challenging — early morning calls (7–9 AM IST) work best.
Daylight Saving Time
CST observes Daylight Saving Time and becomes CDT (Central Daylight Time) during summer months, shifting clocks forward by 1 hour to UTC-5.
During DST transitions, the time difference between IST and CST may shift by ±1 hour. Always verify the current offset above for the most accurate conversion.
Use our world clock tool to compare Mumbai and Chicago with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between IST and CST?
Chicago (CST) is 10.5 hours behind Mumbai (IST). The offset is -10.5 hours.
Is CST ahead or behind IST?
CST is 10.5 hours behind IST. IST is UTC+5:30 and CST is UTC-5.
When it's 12:00 PM in Mumbai, what time is it in Chicago?
When it's 12:00 PM (noon) in Mumbai (IST), it's 1:30 AM in Chicago (CST).
When it's 5:00 PM in Mumbai, what time is it in Chicago?
When it's 5:00 PM in Mumbai (IST), it's 6:30 AM in Chicago (CST).
Does CST change for Daylight Saving Time?
Yes. CST (Central Standard Time, UTC-6) becomes CDT (Central Daylight Time, UTC-5) in summer, shifting clocks forward 1 hour.