Convert JST to IST — Time Difference Between Japan Standard Time and India Standard Time
Drag the slider or click the time display to type a specific hour and instantly convert JST to IST — India Standard Time is 3:30 hours behind Japan Standard Time. Scroll down to browse the full JST to IST conversion table, check what time 9 AM, 10 AM, 11 AM, or 12 PM in Tokyo is in Kolkata, and use the date picker to compare times on any day for accurate scheduling.
JST
Japan Standard Time
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IST
India Standard Time
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JST to IST Time Zone Difference — Hour-by-Hour Conversion Table
Scan each row to find what time any hour in Tokyo is in Kolkata — tap the arrows to jump between days, click "Today" to reset, and use the color-coded bands to quickly spot overlapping work hours, early mornings, and late nights at a glance.
| JST (Tokyo) | IST (Kolkata) |
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How to Convert JST to IST
Drag the slider on the JST timeline to pick your time — the IST time updates instantly. You can also click the time display to type a specific hour or pick one from the 15-minute interval dropdown, and use the date picker to check a different day.
What Is the Time Difference Between JST and IST?
India Standard Time (IST) is 3:30 hours behind Japan Standard Time (JST). To convert, subtract 3:30 hours — for example, 9:00 AM JST is 5:30 AM IST.
What Time Is It Now in Tokyo?
What Time Is It Now in Kolkata?
JST to IST Quick Reference
JST to IST Meeting Planner
Use the color-coded table above to find overlapping work hours between Tokyo and Kolkata. Amber rows mark daytime hours — pick a slot that falls in amber on both sides for a meeting that works for everyone.
Why Trust This JST to IST Converter?
Timezoney uses the IANA Time Zone Database — the same source that powers your phone and computer — so every conversion handles daylight saving transitions and half-hour offsets automatically.
Japan Standard Time
- Abbreviation
- JST
- UTC Offset
- UTC+9:00
- City
- Tokyo
- Country
- Japan
India Standard Time
- Abbreviation
- IST
- UTC Offset
- UTC+5:30
- City
- Kolkata
- Country
- India