IST to JST Converter
India Standard Time to Japan Standard Time: live clocks, today's full conversion table, and the best hours to call. Daylight saving is handled automatically.
About IST and JST
India Standard Time (IST) is used across all of India, including Mumbai, Delhi, Bengaluru, Chennai and Kolkata. India does not observe daylight saving time.
Japan Standard Time (JST) is used across Japan, including Tokyo and Osaka. Japan does not observe daylight saving time.
Time difference between IST and JST
JST is 3 hours 30 minutes ahead of IST throughout the year. The clocks and table above are computed live from the official IANA time zone database in your browser, so daylight saving transitions are always already included.
IST to JST conversion for every hour
9:00 AM IST is 12:30 PM JST. 10:00 AM IST is 1:30 PM JST. 12:00 PM IST is 3:30 PM JST. 2:00 PM IST is 5:30 PM JST. 3:00 PM IST is 6:30 PM JST. 4:00 PM IST is 7:30 PM JST. 5:00 PM IST is 8:30 PM JST. The table at the top of this page lists all 24 hours, updated live for today's date.
Best hours for meetings
Scan the table for rows where both sides land inside working hours (9:00 to 18:00). Rows where one side is early morning or late evening are workable for a quick call; avoid rows where either side is in the middle of the night. To add a third city, type it into the planner below, or open the full time zone converter and meeting planner.
Related conversions
JST to IST IST to EST EST to IST IST to PST PST to IST IST to CST CST to IST IST to MST