KST to GMT time converter
Greenwich Mean Time (GMT) is 9 hours behind Korea Standard Time (KST) all year round. Use the grid below to line up Seoul and Greenwich: drag the cursor across the day, and working hours (9 AM–5 PM) are highlighted in every row so you can spot a slot that suits both sides.
Right now it is 18:43 KST in Seoul and 09:43 UTC in Greenwich.
Tue, Oct 20
Seoul home
18:43
Tue, Oct 20 · UTC+9
UTC
09:43
Tue, Oct 20 · UTC+0
2/10 zones · drag the tape, scroll sideways or use the arrow keys; Home jumps back to now.
KST to GMT: frequently asked
What is the time difference between KST and GMT?
Greenwich Mean Time (GMT) is 9 hours behind Korea Standard Time (KST) all year round.
What time is 9 AM KST in GMT?
9:00 AM KST is 12:00 AM GMT.
When do working hours overlap between Seoul and Greenwich?
Standard 9:00 AM–5:00 PM working hours never overlap. The closest fit is 6:00 PM KST, which is 9:00 AM GMT.