KST to UTC Converter
UTC is 9 hours behind KST. 9:00 AM KST = 12:00 AM UTC.
UTC is 9 hours behind KST. To convert KST to UTC, subtract 9 hours from the KST time: 9:00 AM KST = 12:00 AM UTC.
KST (Korea Time) is used in South Korea. UTC (UTC) is used in The world's time standard; used in aviation, computing and science.
KST to UTC time conversion table
KST to UTC on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| KST | UTC | Day |
|---|---|---|
| 12:00 AM KST | 3:00 PM UTC | previous day |
| 1:00 AM KST | 4:00 PM UTC | previous day |
| 2:00 AM KST | 5:00 PM UTC | previous day |
| 3:00 AM KST | 6:00 PM UTC | previous day |
| 4:00 AM KST | 7:00 PM UTC | previous day |
| 5:00 AM KST | 8:00 PM UTC | previous day |
| 6:00 AM KST | 9:00 PM UTC | previous day |
| 7:00 AM KST | 10:00 PM UTC | previous day |
| 8:00 AM KST | 11:00 PM UTC | previous day |
| 9:00 AM KST | 12:00 AM UTC | night |
| 10:00 AM KST | 1:00 AM UTC | night |
| 11:00 AM KST | 2:00 AM UTC | night |
| 12:00 PM KST | 3:00 AM UTC | night |
| 1:00 PM KST | 4:00 AM UTC | night |
| 2:00 PM KST | 5:00 AM UTC | night |
| 3:00 PM KST | 6:00 AM UTC | — |
| 4:00 PM KST | 7:00 AM UTC | — |
| 5:00 PM KST | 8:00 AM UTC | — |
| 6:00 PM KST | 9:00 AM UTC | — |
| 7:00 PM KST | 10:00 AM UTC | — |
| 8:00 PM KST | 11:00 AM UTC | — |
| 9:00 PM KST | 12:00 PM UTC | — |
| 10:00 PM KST | 1:00 PM UTC | — |
| 11:00 PM KST | 2:00 PM UTC | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert KST to UTC
Subtract 9 hours from the KST time to get UTC.
Example: 9:00 AM KST = 12:00 AM UTC.
Across midnight: 1:00 AM KST = 4:00 PM UTC (previous day). The date changes, so always check the day as well as the hour.
Time difference between KST and UTC
The time difference between KST and UTC is 9 hours all year – UTC is behind KST.
KST and UTC during daylight saving time
- KST does not observe daylight saving time; it stays on UTC+9 all year.
- UTC does not observe daylight saving time; it stays on UTC+0 all year.
Best time for a meeting between KST and UTC
KST and UTC have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM KST, which is 10:00 PM UTC.
KST to UTC FAQ
What is the time difference between KST and UTC?
UTC is 9 hours behind KST all year. 9:00 AM KST = 12:00 AM UTC.
What is 9 AM KST in UTC?
9:00 AM KST is 12:00 AM UTC.
What is 12 PM (noon) KST in UTC?
12:00 PM KST is 3:00 AM UTC.
Is UTC ahead of or behind KST?
UTC is 9 hours behind KST, so it is earlier in UTC 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 UTC change for daylight saving time?
No. UTC 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 UTC?
KST and UTC have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM KST, which is 10:00 PM UTC.
Related conversions
Convert UTC to KST
Convert KST to other time zones
Convert other time zones to UTC
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.