Time zone converter
IST to JST
Convert India Time — Mumbai to Japan Time — Tokyo — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Mumbai, it's 12:30 PM in Tokyo. Tokyo is 3½ hours ahead of Mumbai. Use the converter above to turn any IST time into JST, or scan the hour-by-hour table below for the full day.
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India Time — Mumbai ·
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Japan Time — Tokyo ·
Convert a specific timein Mumbai → — in Tokyo
IST to JST at a glance
9:00 AM IST
12:30 PM
JST · Tokyo
12:00 PM IST
3:30 PM
JST · Tokyo
5:00 PM IST
8:30 PM
JST · Tokyo
Planning a meeting between Mumbai and Tokyo
Planning a call between Mumbai and Tokyo? The best overlap during a standard 9-to-5 workday runs 9:00 AM–1:30 PM IST (12:30 PM–5:00 PM JST). Aim for that window to reach both sides during business hours.
Hour-by-hour: Mumbai to Tokyo
A full day mapped from IST to JST.
Frequently asked
Is Tokyo ahead of or behind Mumbai?
Tokyo is 3½ hours ahead of Mumbai.
What is 12:00 PM IST in JST?
12:00 PM in Mumbai is 3:30 PM in Tokyo.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so IST and JST automatically reflect the correct daylight-saving offset for the current date.