Tokyo
Mumbai
Convert JST to IST
Japan Standard Time to India Standard Time — Mumbai is 3.5 hours behind Tokyo
Quick Facts
Time Difference
-3.5 hours
JST Full Name
Japan Standard Time
IST Full Name
India Standard Time
JST to IST Conversion Table
Related Conversions
About JST and IST Time Zones
JST (Japan Standard Time) is UTC+9 and covers cities like Tokyo, Osaka, Kyoto. IST (India Standard Time) is UTC+5:30 and covers cities like Mumbai, Delhi, Bangalore.
When it's 12:00 PM (noon) in Tokyo (JST), it's 8:30 AM in Mumbai (IST). The time difference between JST and IST is 3.5 hours — Mumbai is behind Tokyo.
The best meeting window is 9:00 AM–1.5:00 PM JST (0.5:00 PM–5:00 PM IST).
Use our world clock tool to compare Tokyo and Mumbai with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between JST and IST?
Mumbai (IST) is 3.5 hours behind Tokyo (JST). The offset is -3.5 hours.
Is IST ahead or behind JST?
IST is 3.5 hours behind JST. JST is UTC+9 and IST is UTC+5:30.
When it's 12:00 PM in Tokyo, what time is it in Mumbai?
When it's 12:00 PM (noon) in Tokyo (JST), it's 8:30 AM in Mumbai (IST).
When it's 5:00 PM in Tokyo, what time is it in Mumbai?
When it's 5:00 PM in Tokyo (JST), it's 1:30 PM in Mumbai (IST).