KST to JST time converter
Japan Standard Time (JST) is the same time as Korea Standard Time (KST) all year round. Use the grid below to line up Seoul and Tokyo: 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 18:43 JST in Tokyo.
Tue, Oct 20
Seoul home
18:43
Tue, Oct 20 · UTC+9
Tokyo
18:43
Tue, Oct 20 · UTC+9
2/10 zones · drag the tape, scroll sideways or use the arrow keys; Home jumps back to now.
KST to JST: frequently asked
What is the time difference between KST and JST?
Japan Standard Time (JST) is the same time as Korea Standard Time (KST) all year round.
What time is 9 AM KST in JST?
9:00 AM KST is 9:00 AM JST.
When do working hours overlap between Seoul and Tokyo?
Both sides are within 9:00 AM–5:00 PM working hours between 9:00 AM and 5:00 PM KST (9:00 AM to 5:00 PM JST).