KST to MST Time Converter
Convert Korea Standard Time to Mountain Time instantly.
Scroll the timeline to check any hour of the day.
Korea Standard Time
KST
5:25
Mountain Time
MST
2:25
KST is on standard time (KST), while MST is on daylight savings (MDT) right now.
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the KST to MST time difference works
MST is 15 hours behind KST. Korea Standard Time (KST) is the time zone of South Korea. Mountain Time (MST) is the US Mountain time zone. For example, 9:00 AM KST is 6:00 PM MST. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
15 hours
Daylight saving
MST only
KST offset
UTC+9
MST offset
UTC-7
KST to MST conversion chart
| Korea Standard Time (KST) | Mountain Time (MST) |
|---|---|
| 12:00 AM | 9:00 AM -1 day |
| 1:00 AM | 10:00 AM -1 day |
| 2:00 AM | 11:00 AM -1 day |
| 3:00 AM | 12:00 PM -1 day |
| 4:00 AM | 1:00 PM -1 day |
| 5:00 AM | 2:00 PM -1 day |
| 6:00 AM | 3:00 PM -1 day |
| 7:00 AM | 4:00 PM -1 day |
| 8:00 AM | 5:00 PM -1 day |
| 9:00 AM | 6:00 PM -1 day |
| 10:00 AM | 7:00 PM -1 day |
| 11:00 AM | 8:00 PM -1 day |
| 12:00 PM | 9:00 PM -1 day |
| 1:00 PM | 10:00 PM -1 day |
| 2:00 PM | 11:00 PM -1 day |
| 3:00 PM | 12:00 AM |
| 4:00 PM | 1:00 AM |
| 5:00 PM | 2:00 AM |
| 6:00 PM | 3:00 AM |
| 7:00 PM | 4:00 AM |
| 8:00 PM | 5:00 AM |
| 9:00 PM | 6:00 AM |
| 10:00 PM | 7:00 AM |
| 11:00 PM | 8:00 AM |
Cities in each time zone
Korea Standard Time (KST)
SeoulBusanIncheonDaeguDaejeon
Mountain Time (MST)
DenverSalt Lake CityAlbuquerqueBoiseColorado Springs
KST to MST questions
Is MST ahead of or behind KST?
MST is 15 hours behind KST. So 9:00 AM KST is 6:00 PM MST, and 5:00 PM KST is 2:00 AM MST.
What time is it in MST when it is 12:00 PM KST?
When it is 12:00 PM (noon) KST in Korea Standard Time, it is 9:00 PM MST in Mountain Time.
How many hours difference is there between KST and MST?
There is a 15 hours difference. Mountain Time (MST) runs 15 hours behind Korea Standard Time (KST).
Do KST and MST observe daylight saving time?
Mountain Time observes daylight saving time but Korea Standard Time does not, so the difference between them changes by an hour twice a year.
What is the best time to schedule a meeting between KST and MST?
A standard 9-to-5 workday in Korea Standard Time and Mountain Time does not overlap, so pick the early morning in the later zone or the late evening in the earlier zone.
Which cities use KST and MST?
Korea Standard Time (KST) covers cities such as Seoul, Busan, Incheon, Daegu, Daejeon. Mountain Time (MST) covers cities such as Denver, Salt Lake City, Albuquerque, Boise, Colorado Springs.