IST to JST time converter
JST is 3 hours 30 minutes ahead of IST.
JST
UTC+9 · UTC+9
IST time to JST time
For Sunday 11 October 2026. Green rows fall in both places' 9 to 5.
| IST time | JST time |
|---|---|
| 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 amnext day |
| 10:00 pm | 1:30 amnext day |
| 11:00 pm | 2:30 amnext day |
Best time to call JST from IST
Both 9 to 5 working days overlap for 5 hours, from 9:00 am–2:00 pm IST time, which is 12:30 pm–5:30 pm JST time.
Does the time difference change?
No. Neither IST nor JST changes its clocks in the coming year, so the difference stays the same.
Compare IST · JST with your time
Your own time zone comes first, then IST · JST. Add teammates or more cities, then click an hour to plan a meeting.
More conversions from IST
Questions
What is the time difference between IST and JST?
JST is 3 hours 30 minutes ahead of IST.
When is the best time to call JST from IST?
Both 9 to 5 working days overlap for 5 hours, from 9:00 am–2:00 pm IST time, which is 12:30 pm–5:30 pm JST time.
Does the time difference change?
No. Neither IST nor JST changes its clocks in the coming year, so the difference stays the same.
Updated Sunday 11 October 2026