ToolFeather
Time zonesLive · DST-aware

IST to JST Converter

See the current time in IST (India) and JST (Tokyo) side by side, the exact time difference right now, and convert any time between the two zones.

Quick presets

IST to JST Converter

IST
India
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JST
Tokyo
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Uses your browser's built-in, DST-aware time-zone data.

ToolFeather · Intl API

About converting IST to JST

India Standard Time (India) and Japan Standard Time (Tokyo) are in different time zones, so a meeting, call or stream that's convenient in one may be early or late in the other. The clocks above update live and account for daylight saving automatically, so the time difference you see is the real one for today — not a fixed number that goes stale twice a year.

To plan across the two, type a time into the IST box (or tap a quick preset) and read the JST equivalent, including a "next day" or "previous day" note when the conversion crosses midnight. For any other pair of zones or cities, use the full timezone converter.

IST vs JST: the time difference through the year

The difference stays the same all year: JST is 3 h 30 min ahead of IST.

PeriodDifference
Oct 23, 2026 – Oct 23, 2027JST 3 h 30 min ahead of IST

Daylight saving

Neither IST nor JST uses daylight saving, so this conversion never changes.

IST to JST conversion table

ISTJST
12:00 AM3:30 AM
1:00 AM4:30 AM
2:00 AM5:30 AM
3:00 AM6:30 AM
4:00 AM7:30 AM
5:00 AM8:30 AM
6:00 AM9:30 AM
7:00 AM10:30 AM
8:00 AM11:30 AM
9:00 AM12:30 PM
10:00 AM1:30 PM
11:00 AM2:30 PM
12:00 PM3:30 PM
1:00 PM4:30 PM
2:00 PM5:30 PM
3:00 PM6:30 PM
4:00 PM7:30 PM
5:00 PM8:30 PM
6:00 PM9:30 PM
7:00 PM10:30 PM
8:00 PM11:30 PM
9:00 PM12:30 AM (next day)
10:00 PM1:30 AM (next day)
11:00 PM2:30 AM (next day)

Best time to meet

The two zones

IST · India Standard Time

India Standard Time is UTC+5:30 all year — one of the few half-hour offsets. India uses a single time zone and has no daylight saving.

JST · Japan Standard Time

Japan Standard Time is UTC+9 all year. Japan has not used daylight saving since 1951.

Frequently asked questions

6 answers
What is the time difference between IST and JST?
It's shown live at the top of this page (and it can change with daylight saving). The converter uses the current, DST-aware difference between India Standard Time and Japan Standard Time, so the time you see is always right for right now.
How do I convert IST to JST?
Enter a time in the IST box and the equivalent JST time appears instantly, adjusted for the current offset between the two zones — including a note if it lands on the previous or next day.
Is this IST to JST converter accurate with daylight saving?
Yes. It uses your browser's built-in time-zone database (the IANA zones behind India and Tokyo), which tracks daylight-saving changes automatically, so the current times and difference are correct.
What time is it in Tokyo right now?
The live clock above shows the current time in Tokyo (JST), updating every second, alongside IST.
Does the IST to JST time difference change?
No. Neither switch changes the gap: JST is 3 h 30 min ahead of IST all year.
What is a good meeting time for IST and JST?
Office hours overlap from 9:00 AM to 1:30 PM IST (12:30 PM to 5:00 PM JST).