KST to JST Converter
JST and KST are on the same time. 9:00 AM KST = 9:00 AM JST.
JST and KST are on the same time. Converting KST to JST leaves the clock unchanged: 9:00 AM KST = 9:00 AM JST.
KST (Korea Time) is used in South Korea. JST (Japan Time) is used in Japan.
KST to JST time conversion table
KST to JST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| KST | JST | Day |
|---|---|---|
| 12:00 AM KST | 12:00 AM JST | night |
| 1:00 AM KST | 1:00 AM JST | night |
| 2:00 AM KST | 2:00 AM JST | night |
| 3:00 AM KST | 3:00 AM JST | night |
| 4:00 AM KST | 4:00 AM JST | night |
| 5:00 AM KST | 5:00 AM JST | night |
| 6:00 AM KST | 6:00 AM JST | — |
| 7:00 AM KST | 7:00 AM JST | — |
| 8:00 AM KST | 8:00 AM JST | — |
| 9:00 AM KST | 9:00 AM JST | work hours |
| 10:00 AM KST | 10:00 AM JST | work hours |
| 11:00 AM KST | 11:00 AM JST | work hours |
| 12:00 PM KST | 12:00 PM JST | work hours |
| 1:00 PM KST | 1:00 PM JST | work hours |
| 2:00 PM KST | 2:00 PM JST | work hours |
| 3:00 PM KST | 3:00 PM JST | work hours |
| 4:00 PM KST | 4:00 PM JST | work hours |
| 5:00 PM KST | 5:00 PM JST | — |
| 6:00 PM KST | 6:00 PM JST | — |
| 7:00 PM KST | 7:00 PM JST | — |
| 8:00 PM KST | 8:00 PM JST | — |
| 9:00 PM KST | 9:00 PM JST | — |
| 10:00 PM KST | 10:00 PM JST | night |
| 11:00 PM KST | 11:00 PM JST | night |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert KST to JST
KST and JST show the same clock time, so no adjustment is needed.
Example: 9:00 AM KST = 9:00 AM JST.
Time difference between KST and JST
The time difference between KST and JST is 0 minutes all year.
KST and JST during daylight saving time
- KST does not observe daylight saving time; it stays on UTC+9 all year.
- JST does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between KST and JST
KST and JST share 8 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 5:00 PM KST lands between 9:00 AM and 5:00 PM JST, inside working hours for both.
KST to JST FAQ
What is the time difference between KST and JST?
JST and KST are on the same time all year. 9:00 AM KST = 9:00 AM JST.
What is 9 AM KST in JST?
9:00 AM KST is 9:00 AM JST.
What is 12 PM (noon) KST in JST?
12:00 PM KST is 12:00 PM JST.
Is JST ahead of or behind KST?
Neither. JST and KST keep the same clock time.
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 JST change for daylight saving time?
No. JST 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 JST?
KST and JST share 8 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 5:00 PM KST lands between 9:00 AM and 5:00 PM JST, inside working hours for both.
Related conversions
Convert JST to KST
Convert KST to other time zones
Convert other time zones to JST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.