IST to JST Time Converter
Convert India Standard Time to Japan Standard Time instantly.
Scroll the timeline to check any hour of the day.
India Standard Time
IST
1:54
Japan Standard Time
JST
5:24
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How the IST to JST time difference works
JST is 3 hours 30 minutes ahead of IST. India Standard Time (IST) is the time zone of India and Sri Lanka. Japan Standard Time (JST) is the time zone of Japan. For example, 9:00 AM IST is 12:30 PM JST. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
3 hours 30 minutes
Daylight saving
Neither
IST offset
UTC+5:30
JST offset
UTC+9
IST to JST conversion chart
| India Standard Time (IST) | Japan Standard Time (JST) |
|---|---|
| 12:00 AM | 3:30 AM |
| 1:00 AM | 4:30 AM |
| 2:00 AM | 5:30 AM |
| 3:00 AM | 6:30 AM |
| 4:00 AM | 7:30 AM |
| 5:00 AM | 8:30 AM |
| 6:00 AM | 9:30 AM |
| 7:00 AM | 10:30 AM |
| 8:00 AM | 11:30 AM |
| 9:00 AM | 12:30 PM |
| 10:00 AM | 1:30 PM |
| 11:00 AM | 2:30 PM |
| 12:00 PM | 3:30 PM |
| 1:00 PM | 4:30 PM |
| 2:00 PM | 5:30 PM |
| 3:00 PM | 6:30 PM |
| 4:00 PM | 7:30 PM |
| 5:00 PM | 8:30 PM |
| 6:00 PM | 9:30 PM |
| 7:00 PM | 10:30 PM |
| 8:00 PM | 11:30 PM |
| 9:00 PM | 12:30 AM +1 day |
| 10:00 PM | 1:30 AM +1 day |
| 11:00 PM | 2:30 AM +1 day |
Best time to meet
A standard 9 to 5 workday overlaps from 9:00 AM to 1:30 PM IST (12:30 PM to 5:00 PM JST). Schedule inside that window to catch both coasts during business hours.
Cities in each time zone
India Standard Time (IST)
MumbaiDelhiBengaluruKolkataChennaiHyderabad
Japan Standard Time (JST)
TokyoOsakaYokohamaNagoyaSapporo
IST to JST questions
Is JST ahead of or behind IST?
JST is 3 hours 30 minutes ahead of IST. So 9:00 AM IST is 12:30 PM JST, and 5:00 PM IST is 8:30 PM JST.
What time is it in JST when it is 12:00 PM IST?
When it is 12:00 PM (noon) IST in India Standard Time, it is 3:30 PM JST in Japan Standard Time.
How many hours difference is there between IST and JST?
There is a 3 hours 30 minutes difference. Japan Standard Time (JST) runs 3 hours 30 minutes ahead of India Standard Time (IST).
Do IST and JST observe daylight saving time?
Neither India Standard Time nor Japan Standard Time observes daylight saving time, so the 3 hours 30 minutes difference between them is the same all year.
What is the best time to schedule a meeting between IST and JST?
A standard 9-to-5 workday overlaps from 9:00 AM to 1:30 PM IST (12:30 PM to 5:00 PM JST). Scheduling inside that window keeps the call during business hours in both India Standard Time and Japan Standard Time.
Which cities use IST and JST?
India Standard Time (IST) covers cities such as Mumbai, Delhi, Bengaluru, Kolkata, Chennai, Hyderabad. Japan Standard Time (JST) covers cities such as Tokyo, Osaka, Yokohama, Nagoya, Sapporo.