JST to KST time converter

JST and KST are on the same time. When it is 9:00 AM in JST, it is 9:00 AM in KST.

JST UTC+9

Saturday, October 17, 2026

KST UTC+9

Saturday, October 17, 2026

JST
Japan Standard Time
Sat, Oct 17
UTC+9
KST
Korea Standard Time
Sat, Oct 17
UTC+9±0
Finding your time zone…
Shared working hours (9:00–18:00)

JST to KST conversion table

Every hour of today in JST and the matching time in KST. Light rows are typical working hours (9:00–18:00).

JSTKST
12:00 AM12:00 AM
1:00 AM1:00 AM
2:00 AM2:00 AM
3:00 AM3:00 AM
4:00 AM4:00 AM
5:00 AM5:00 AM
6:00 AM6:00 AM
7:00 AM7:00 AM
8:00 AM8:00 AM
9:00 AM9:00 AM
10:00 AM10:00 AM
11:00 AM11:00 AM
12:00 PM12:00 PM
1:00 PM1:00 PM
2:00 PM2:00 PM
3:00 PM3:00 PM
4:00 PM4:00 PM
5:00 PM5:00 PM
6:00 PM6:00 PM
7:00 PM7:00 PM
8:00 PM8:00 PM
9:00 PM9:00 PM
10:00 PM10:00 PM
11:00 PM11:00 PM

Best time to call or meet

Both sides are at work from 9:00 AM – 6:00 PM in JST (9:00 AM – 6:00 PM in KST).

Daylight saving time and the difference

The difference stays 0 hours all year.

More conversions

KST to JSTJST to UTCJST to GMTJST to ESTJST to CSTJST to MSTJST to PSTJST to CETJST to MSKJST to GSTJST to PKTJST to ISTJST to SGT
UTC to KSTGMT to KSTEST to KSTCST to KSTMST to KSTPST to KSTCET to KSTMSK to KSTGST to KSTPKT to KSTIST to KSTSGT to KST

Questions and answers

What is the time difference between JST and KST?

JST and KST are on the same time.

What time is it in KST when it is 9 AM in JST?

When it is 9:00 AM in JST, it is 9:00 AM in KST.

When is the best time to call KST from JST?

Both sides are at work from 9:00 AM – 6:00 PM in JST (9:00 AM – 6:00 PM in KST).

Does the time difference between JST and KST change?

No. The difference stays 0 hours all year.