JST (Tokyo) to IST (Kolkata) Converter

Convert between JST (Tokyo) and IST (Kolkata).
10:11:36 AM06:41:36 AM

Time Gap
3h30mbehind

Interactive Time Converter

Live updates • DST aware

JST (Tokyo)

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IST (Kolkata)

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Time Analysis

Real-time difference

3h 30m

IST (Kolkata) is 3.5 hours behind JST (Tokyo)

Best for

JST (Tokyo) AM

Avoid

IST (Kolkata) PM

From

JST (Tokyo)

CityTokyo
CountryJapan
UTC OffsetUTC+9
Live Time10:11:36 AM

Currently Morning in JST (Tokyo)

To

IST (Kolkata)

CityKolkata
CountryIndia
UTC OffsetUTC+5:30
Live Time06:41:36 AM

Currently Early Morning in IST (Kolkata)

24-Hour Time Comparison

UTC → JST (Tokyo) → IST (Kolkata)

JST (Tokyo) Business Hours

Business Hours: 9:00 AM - 5:00 PM (UTC +09:00)

IST (Kolkata) Business Hours

Business Hours: 9:00 AM - 5:00 PM (UTC +05:30)

Best time to schedule meetings: When both timezones are in business hours (9 AM - 5 PM)

JST (Tokyo) is 3h 30m ahead of IST (Kolkata)

UTC
JST (Tokyo)9AM-5PM
IST (Kolkata)9AM-5PM
00:00
Apr 5
09:00
Apr 5
05:30
Apr 5
01:00
Apr 5
10:00
Apr 5
06:30
Apr 5
02:00
Apr 5
11:00
Apr 5
07:30
Apr 5
03:00
Apr 5
12:00
Apr 5
08:30
Apr 5
04:00
Apr 5
13:00
Apr 5
09:30
Apr 5
05:00
Apr 5
14:00
Apr 5
10:30
Apr 5
06:00
Apr 5
15:00
Apr 5
11:30
Apr 5
07:00
Apr 5
16:00
Apr 5
12:30
Apr 5
08:00
Apr 5
17:00
Apr 5
13:30
Apr 5
09:00
Apr 5
18:00
Apr 5
14:30
Apr 5
10:00
Apr 5
19:00
Apr 5
15:30
Apr 5
11:00
Apr 5
20:00
Apr 5
16:30
Apr 5
12:00
Apr 5
21:00
Apr 5
17:30
Apr 5
13:00
Apr 5
22:00
Apr 5
18:30
Apr 5
14:00
Apr 5
23:00
Apr 5
19:30
Apr 5
15:00
Apr 5
00:00 (next day)
Apr 6
20:30
Apr 5
16:00
Apr 5
01:00 (next day)
Apr 6
21:30
Apr 5
17:00
Apr 5
02:00 (next day)
Apr 6
22:30
Apr 5
18:00
Apr 5
03:00 (next day)
Apr 6
23:30
Apr 5
19:00
Apr 5
04:00 (next day)
Apr 6
00:30 (next day)
Apr 6
20:00
Apr 5
05:00 (next day)
Apr 6
01:30 (next day)
Apr 6
21:00
Apr 5
06:00 (next day)
Apr 6
02:30 (next day)
Apr 6
22:00
Apr 5
07:00 (next day)
Apr 6
03:30 (next day)
Apr 6
23:00
Apr 5
08:00 (next day)
Apr 6
04:30 (next day)
Apr 6
Current hour in UTC
Overlap Business Hours (Both 9 AM - 5 PM)
JST (Tokyo) only business hour
IST (Kolkata) only business hour
Overlap indicator
JST (Tokyo) indicator
IST (Kolkata) indicator
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Popular Time Zone Pairs

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UTC → PST
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JST (Tokyo) → UTC
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JST (Tokyo) → GMT
Available
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Available
JST (Tokyo) → PST
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JST (Tokyo) → CET
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JST (Tokyo) → IST
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Frequently Asked Questions

Everything you need to know about JST (Tokyo) to IST (Kolkata) time conversion

General Questions

IST (Kolkata) is 3 hours and 30 minutes behind JST (Tokyo).

This means that right now, when it is 12:00 AM in JST (Tokyo), it is 8:30 PM in IST (Kolkata).

Conversely, when it is 12:00 AM in IST (Kolkata), it is 3:30 AM in JST (Tokyo).

Business & Meetings

Travel Planning

Technical Details