IST to Tokyo Time Converter

JST is 3 hours 30 minutes ahead of IST. 9:00 AM IST = 12:30 PM JST.

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ISTfrom
India Standard Time
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Tokyo, Japan
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JST is 3 hours 30 minutes ahead of IST. To convert IST to Tokyo Time, add 3 hours 30 minutes to the IST time: 9:00 AM IST = 12:30 PM JST.

IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Tokyo Time (Tokyo time) is used in Tokyo, Japan.

IST here means India Standard Time, not Irish or Israel Standard Time.

IST to Tokyo Time time conversion table

IST to Tokyo Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.

ISTTokyo TimeDay
12:00 AM IST3:30 AM JSTnight
1:00 AM IST4:30 AM JSTnight
2:00 AM IST5:30 AM JSTnight
3:00 AM IST6:30 AM JST—
4:00 AM IST7:30 AM JST—
5:00 AM IST8:30 AM JST—
6:00 AM IST9:30 AM JST—
7:00 AM IST10:30 AM JST—
8:00 AM IST11:30 AM JST—
9:00 AM IST12:30 PM JSTwork hours
10:00 AM IST1:30 PM JSTwork hours
11:00 AM IST2:30 PM JSTwork hours
12:00 PM IST3:30 PM JSTwork hours
1:00 PM IST4:30 PM JSTwork hours
2:00 PM IST5:30 PM JST—
3:00 PM IST6:30 PM JST—
4:00 PM IST7:30 PM JST—
5:00 PM IST8:30 PM JST—
6:00 PM IST9:30 PM JST—
7:00 PM IST10:30 PM JSTnight
8:00 PM IST11:30 PM JSTnight
9:00 PM IST12:30 AM JSTnext day
10:00 PM IST1:30 AM JSTnext day
11:00 PM IST2:30 AM JSTnext day
  • Work rows — 9 AM–5 PM in both places
  • Night in the destination (10 PM–6 AM)

How to convert IST to Tokyo Time

Add 3 hours 30 minutes to the IST time to get Tokyo Time.

Example: 9:00 AM IST = 12:30 PM JST.

Across midnight: 10:00 PM IST = 1:30 AM JST (next day). The date changes, so always check the day as well as the hour.

Time difference between IST and Tokyo Time

The time difference between IST and Tokyo Time is 3 hours 30 minutes all year – JST is ahead of IST.

IST and Tokyo Time during daylight saving time

  • IST does not observe daylight saving time; it stays on UTC+5:30 all year.
  • Tokyo Time does not observe daylight saving time; it stays on UTC+9 all year.

Best time for a meeting between IST and Tokyo Time

IST and Tokyo Time share 4 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:30 PM IST lands between 12:30 PM and 5:00 PM JST, inside working hours for both.

Plan a meeting across more time zones.

IST to Tokyo Time FAQ

What is the time difference between IST and Tokyo Time?

JST is 3 hours 30 minutes ahead of IST all year. 9:00 AM IST = 12:30 PM JST.

What is 9 AM IST in Tokyo Time?

9:00 AM IST is 12:30 PM JST.

What is 12 PM (noon) IST in Tokyo Time?

12:00 PM IST is 3:30 PM JST.

Is Tokyo Time ahead of or behind IST?

JST is 3 hours 30 minutes ahead of IST, so it is later in Tokyo Time than in IST.

Does IST change for daylight saving time?

No. IST stays on the same offset all year, so conversions never shift for daylight saving time.

Does Tokyo Time change for daylight saving time?

No. Tokyo Time stays on the same offset all year, so conversions never shift for daylight saving time.

What is the best time for a meeting between IST and Tokyo Time?

IST and Tokyo Time share 4 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:30 PM IST lands between 12:30 PM and 5:00 PM JST, inside working hours for both.

Related conversions

Convert Tokyo Time to IST

Convert IST to other time zones

Convert other time zones to Tokyo Time

Learn more

Updated 7 November 2026. Time zone data: IANA tz database.