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