JST to KST — Timezone Converter
Japan Standard Time (UTC+9) → Korea Standard Time (UTC+9)
JSTUTC+9
--:--:--
…
Tokyo, Japan
…
KSTUTC+9
--:--:--
…
Seoul, South Korea
About this conversion
Standard differenceNo difference
JST UTCUTC+9
KST UTCUTC+9
Daylight saving (DST)Neither zone
Frequently Asked Questions
What is the time difference between JST and KST?
JST and KST share the same UTC offset — there is no time difference between them.
When it is 12:00 noon JST, what time is it in KST?
Both zones show the same time — it is also 12:00 PM KST.
How do I convert JST time to KST?
No conversion needed — JST and KST are at the same UTC offset.
What cities are in the JST timezone?
Cities in the JST timezone (Japan Standard Time) include: Tokyo, Osaka, Nagoya, Yokohama, Kyoto, Fukuoka.
Do JST or KST observe daylight saving time (DST)?
Neither JST nor KST observes daylight saving time. The offset stays the same year-round.