IST to JST time converter
JST is 3h 30m ahead of IST all year. 9:00 AM IST is 12:30 PM JST.
How many hours is JST from IST?
Today, JST is 3h 30m ahead of IST.
JST is 3h 30m ahead of IST all year.
What's the best time for a meeting between IST and JST?
9:00 AM to 2:30 PM IST (12:30 PM to 6:00 PM JST) falls inside 9 AM to 6 PM work hours on both sides.
What time is it in JST for each hour in IST?
Every hour of today in IST, with daylight saving applied. Green means work hours (9 AM to 6 PM) on both sides.
| IST | JST | Day |
|---|---|---|
| 12:00 AM | 3:30 AM | |
| 1:00 AM | 4:30 AM | |
| 2:00 AM | 5:30 AM | |
| 3:00 AM | 6:30 AM | |
| 4:00 AM | 7:30 AM | |
| 5:00 AM | 8:30 AM | |
| 6:00 AM | 9:30 AM | |
| 7:00 AM | 10:30 AM | |
| 8:00 AM | 11:30 AM | |
| 9:00 AM | 12:30 PM | |
| 10:00 AM | 1:30 PM | |
| 11:00 AM | 2:30 PM | |
| 12:00 PM | 3:30 PM | |
| 1:00 PM | 4:30 PM | |
| 2:00 PM | 5:30 PM | |
| 3:00 PM | 6:30 PM | |
| 4:00 PM | 7:30 PM | |
| 5:00 PM | 8:30 PM | |
| 6:00 PM | 9:30 PM | |
| 7:00 PM | 10:30 PM | |
| 8:00 PM | 11:30 PM | |
| 9:00 PM | 12:30 AM | next day |
| 10:00 PM | 1:30 AM | next day |
| 11:00 PM | 2:30 AM | next day |
Questions
JST is 3h 30m ahead of IST all year.
No. Neither side changes its clocks, so the gap stays 3h 30m all year.
9:00 AM IST is 12:30 PM JST.
9:00 AM to 2:30 PM IST (12:30 PM to 6:00 PM JST) falls inside 9 AM to 6 PM work hours on both sides.
Drag on the IST clock above to mark when you're free, then tap Copy link or Copy image. The JST clock shows them in their time, and the link opens in their own time zone with no sign-up.
Related conversions
More with IST or JST: EST to IST, PST to IST, CST to IST, UTC to IST, GMT to IST, EDT to IST, IST to PDT, PDT to IST, IST to CDT, CDT to IST, BST to IST, IST to BST, CET to IST, IST to CET, AEST to IST, SGT to IST, GST to IST, IST to MST, IST to AEST, IST to SGT, IST to GST, IST to NZT, JST to PST
How this page is made: every time here is computed from the IANA time zone database for the date shown, the same data your phone clock uses. Checked October 15, 2026. Spot a wrong time? Tell us.