KST: Korea Standard Time
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KST to UTC: convert Korea Standard Time to Coordinated Universal Time
UTC is 9 hours behind KST all year.
Neither clock changes for daylight saving, so the gap never moves.
One instant, two local clocks
Drag one day across both zones
Shared instant12:00 UTC
Difference nowUTC is 9 hours behind
KSTKorea Standard Time
21:00Thu, Jan 15
UTCCoordinated Universal Time
12:00Thu, Jan 15
Approximate daylight 09:00 to 17:00 Selected local time
Both lanes show the same instant. Local dates, daylight, and offsets come from each IANA zone on the selected date, so daylight saving changes are included.
Right now
UTC: Coordinated Universal Time
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Local times come from your browser's IANA time zone data.
KST to UTC hour by hour
| KST | UTC |
|---|---|
| 12:00 AM | 3:00 PM (prev day) |
| 1:00 AM | 4:00 PM (prev day) |
| 2:00 AM | 5:00 PM (prev day) |
| 3:00 AM | 6:00 PM (prev day) |
| 4:00 AM | 7:00 PM (prev day) |
| 5:00 AM | 8:00 PM (prev day) |
| 6:00 AM | 9:00 PM (prev day) |
| 7:00 AM | 10:00 PM (prev day) |
| 8:00 AM | 11:00 PM (prev day) |
| 9:00 AM | 12:00 AM |
| 10:00 AM | 1:00 AM |
| 11:00 AM | 2:00 AM |
| 12:00 PM | 3:00 AM |
| 1:00 PM | 4:00 AM |
| 2:00 PM | 5:00 AM |
| 3:00 PM | 6:00 AM |
| 4:00 PM | 7:00 AM |
| 5:00 PM | 8:00 AM |
| 6:00 PM | 9:00 AM |
| 7:00 PM | 10:00 AM |
| 8:00 PM | 11:00 AM |
| 9:00 PM | 12:00 PM |
| 10:00 PM | 1:00 PM |
| 11:00 PM | 2:00 PM |
Scheduling a call between KST and UTC
Standard business hours (9:00 AM to 5:00 PM) do not overlap: daytime in Korea Standard Time falls outside the working day in Coordinated Universal Time, so one side needs an early morning or late evening.
More KST conversions
Offsets are computed from the IANA time zone database for January 15 and July 15 of the current year. KST here means Korea Standard Time (South Korea); UTC means Coordinated Universal Time (the world time standard).