JST
Tokyo
KST
Seoul
Convert JST to KST
Japan Standard Time to Korea Standard Time — Seoul is 0 hours ahead of Tokyo
2:27 AM
Saturday, March 28, 2026
UTC+9
2:27 AM
Saturday, March 28, 2026
UTC+9
Quick Facts
Time Difference
+0 hours
JST Full Name
Japan Standard Time
KST Full Name
Korea Standard Time
JST to KST Conversion Table
JST (Tokyo)
KST (Seoul)
12:00 AM
12:00 AM
1:00 AM
1:00 AM
2:00 AM
2:00 AM
3:00 AM
3:00 AM
4:00 AM
4:00 AM
5:00 AM
5:00 AM
6:00 AM
6:00 AM
7:00 AM
7:00 AM
8:00 AM
8:00 AM
9:00 AM
9:00 AM
10:00 AM
10:00 AM
11:00 AM
11:00 AM
12:00 PM
12:00 PM
1:00 PM
1:00 PM
2:00 PM
2:00 PM
3:00 PM
3:00 PM
4:00 PM
4:00 PM
5:00 PM
5:00 PM
6:00 PM
6:00 PM
7:00 PM
7:00 PM
8:00 PM
8:00 PM
9:00 PM
9:00 PM
10:00 PM
10:00 PM
11:00 PM
11:00 PM
Related Conversions
About JST and KST Time Zones
JST (Japan Standard Time) is UTC+9 and is the standard time zone for Tokyo. KST (Korea Standard Time) is UTC+9 and is the standard time zone for Seoul.
When it's 12:00 PM (noon) in Tokyo (JST), it's 12:00 PM in Seoul (KST). The time difference between JST and KST is 0 hours.
Use our world clock tool to compare Tokyo and Seoul with a visual timeline, or browse more timezone conversions.