IST to JST Time Converter - Live World Clock

Convert time between India Standard Time (IST) and Japan Standard Time (JST). See current time with live clocks.

India (IST)

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10:57:44 PM
Thursday, August 20, 2026

Japan (JST)

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02:27:44 AM
Friday, August 21, 2026

Current Time Difference

IST is -3.5 hours behind JST

What is IST (India Standard Time)?

India Standard Time (IST) is the time zone observed throughout India, with a time offset of UTC+5:30. India does not observe Daylight Saving Time.

Countries and Regions Using IST

Primary Country:

  • India - The entire country follows IST

Also Used By:

  • Sri Lanka

Key Facts about IST:

  • ✓ Over 1.4 billion people use IST
  • ✓ Major tech and financial hub
  • ✓ No DST observed
  • ✓ Single timezone across the country
  • ✓ Major Cities: Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad
  • ✓ UTC Offset: +5:30

What is JST (Japan Standard Time)?

Japan Standard Time (JST) used in Japan, UTC+9:00.

Countries and Regions Using JST

Primary Country:

  • Japan

Also Used By:

  • South Korea

Key Facts about JST:

  • ✓ Third largest economy
  • ✓ Major tech center
  • ✓ No DST observed
  • ✓ Major Cities: Tokyo, Osaka, Yokohama, Nagoya
  • ✓ UTC Offset: +9:00

IST to JST Time Difference

Standard Time Difference:

IST is -3.5 hours behind

Common Use Cases:

  • • Business meetings between India and Japan
  • • International collaboration across timezones
  • • Scheduling calls and conferences

Frequently Asked Questions

Which countries are in IST time zone?

India is the primary country using IST (+5:30). Other countries include: Sri Lanka.

Which countries are in JST time zone?

Japan is the primary country using JST (+9:00). Other countries include: South Korea.

How many hours is IST ahead of JST?

IST is -3.5 hours behind JST.

Does India observe Daylight Saving Time?

No, India does not observe Daylight Saving Time. IST remains +5:30 throughout the year.