IST to Seoul Time Converter
KST is 3 hours 30 minutes ahead of IST. 9:00 AM IST = 12:30 PM KST.
KST is 3 hours 30 minutes ahead of IST. To convert IST to Seoul Time, add 3 hours 30 minutes to the IST time: 9:00 AM IST = 12:30 PM KST.
IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Seoul Time (Seoul time) is used in Seoul, South Korea.
IST here means India Standard Time, not Irish or Israel Standard Time.
IST to Seoul Time time conversion table
IST to Seoul Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| IST | Seoul Time | Day |
|---|---|---|
| 12:00 AM IST | 3:30 AM KST | night |
| 1:00 AM IST | 4:30 AM KST | night |
| 2:00 AM IST | 5:30 AM KST | night |
| 3:00 AM IST | 6:30 AM KST | — |
| 4:00 AM IST | 7:30 AM KST | — |
| 5:00 AM IST | 8:30 AM KST | — |
| 6:00 AM IST | 9:30 AM KST | — |
| 7:00 AM IST | 10:30 AM KST | — |
| 8:00 AM IST | 11:30 AM KST | — |
| 9:00 AM IST | 12:30 PM KST | work hours |
| 10:00 AM IST | 1:30 PM KST | work hours |
| 11:00 AM IST | 2:30 PM KST | work hours |
| 12:00 PM IST | 3:30 PM KST | work hours |
| 1:00 PM IST | 4:30 PM KST | work hours |
| 2:00 PM IST | 5:30 PM KST | — |
| 3:00 PM IST | 6:30 PM KST | — |
| 4:00 PM IST | 7:30 PM KST | — |
| 5:00 PM IST | 8:30 PM KST | — |
| 6:00 PM IST | 9:30 PM KST | — |
| 7:00 PM IST | 10:30 PM KST | night |
| 8:00 PM IST | 11:30 PM KST | night |
| 9:00 PM IST | 12:30 AM KST | next day |
| 10:00 PM IST | 1:30 AM KST | next day |
| 11:00 PM IST | 2:30 AM KST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert IST to Seoul Time
Add 3 hours 30 minutes to the IST time to get Seoul Time.
Example: 9:00 AM IST = 12:30 PM KST.
Across midnight: 10:00 PM IST = 1:30 AM KST (next day). The date changes, so always check the day as well as the hour.
Time difference between IST and Seoul Time
The time difference between IST and Seoul Time is 3 hours 30 minutes all year – KST is ahead of IST.
IST and Seoul Time during daylight saving time
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
- Seoul Time does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between IST and Seoul Time
IST and Seoul Time share 4 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:30 PM IST lands between 12:30 PM and 5:00 PM KST, inside working hours for both.
IST to Seoul Time FAQ
What is the time difference between IST and Seoul Time?
KST is 3 hours 30 minutes ahead of IST all year. 9:00 AM IST = 12:30 PM KST.
What is 9 AM IST in Seoul Time?
9:00 AM IST is 12:30 PM KST.
What is 12 PM (noon) IST in Seoul Time?
12:00 PM IST is 3:30 PM KST.
Is Seoul Time ahead of or behind IST?
KST is 3 hours 30 minutes ahead of IST, so it is later in Seoul Time than in IST.
Does IST change for daylight saving time?
No. IST stays on the same offset all year, so conversions never shift for daylight saving time.
Does Seoul Time change for daylight saving time?
No. Seoul Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between IST and Seoul Time?
IST and Seoul Time share 4 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:30 PM IST lands between 12:30 PM and 5:00 PM KST, inside working hours for both.
Related conversions
Convert Seoul Time to IST
Convert IST to other time zones
Convert other time zones to Seoul Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.