KST to GMT Time Converter
Convert Korea Standard Time to Greenwich Mean Time instantly.
Scroll the timeline to check any hour of the day.
Korea Standard Time
KST
3:06
Greenwich Mean Time
GMT
6:06
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How the KST to GMT time difference works
GMT is 9 hours behind KST. Korea Standard Time (KST) is the time zone of South Korea. Greenwich Mean Time (GMT) is the fixed UTC+0 reference time, used by the United Kingdom and Ireland in winter. For example, 9:00 AM KST is 12:00 AM GMT. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
9 hours
Daylight saving
Neither
KST offset
UTC+9
GMT offset
UTC+0
KST to GMT conversion chart
| Korea Standard Time (KST) | Greenwich Mean Time (GMT) |
|---|---|
| 12:00 AM | 3:00 PM -1 day |
| 1:00 AM | 4:00 PM -1 day |
| 2:00 AM | 5:00 PM -1 day |
| 3:00 AM | 6:00 PM -1 day |
| 4:00 AM | 7:00 PM -1 day |
| 5:00 AM | 8:00 PM -1 day |
| 6:00 AM | 9:00 PM -1 day |
| 7:00 AM | 10:00 PM -1 day |
| 8:00 AM | 11:00 PM -1 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 |
Cities in each time zone
Korea Standard Time (KST)
SeoulBusanIncheonDaeguDaejeon
Greenwich Mean Time (GMT)
LondonDublinLisbonEdinburghManchester
KST to GMT questions
Is GMT ahead of or behind KST?
GMT is 9 hours behind KST. So 9:00 AM KST is 12:00 AM GMT, and 5:00 PM KST is 8:00 AM GMT.
What time is it in GMT when it is 12:00 PM KST?
When it is 12:00 PM (noon) KST in Korea Standard Time, it is 3:00 AM GMT in Greenwich Mean Time.
How many hours difference is there between KST and GMT?
There is a 9 hours difference. Greenwich Mean Time (GMT) runs 9 hours behind Korea Standard Time (KST).
Do KST and GMT observe daylight saving time?
Neither Korea Standard Time nor Greenwich Mean Time shifts its clocks for daylight saving time, so the 9 hours difference between them is the same all year. The United Kingdom and Ireland use GMT only in winter; from late March to late October they switch to British Summer Time (BST), one hour ahead of GMT.
What is the best time to schedule a meeting between KST and GMT?
A standard 9-to-5 workday in Korea Standard Time and Greenwich Mean 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 GMT?
Korea Standard Time (KST) covers cities such as Seoul, Busan, Incheon, Daegu, Daejeon. Greenwich Mean Time (GMT) covers cities such as London, Dublin, Lisbon, Edinburgh, Manchester.