Tokyo to Seoul Time Converter
JST ↔ KST — Convert any time, with daylight saving handled automatically.
Live converter
Pick a time to see the result
About Tokyo (JST)
Tokyo is in Japan, located in the Asia/Tokyo time zone. Japan's observance of JST follows the standard IANA database rules and is updated automatically by your browser.
About Seoul (KST)
Seoul is in Korea, located in the Asia/Seoul time zone. The current offset compared to Tokyo depends on whether either location is currently observing daylight saving time.
Common meeting times
Use the live converter above to find when business hours overlap. The full meeting planner shows a 24-hour visual timeline across both cities and highlights the best windows for a video call or meeting.