KST to JST time zone converter

KST (UTC+09:00)
Korea Standard Time
15:31:00
Oct 19
  • 12
    AM
  • 1
    AM
  • 2
    AM
  • 3
    AM
  • 4
    AM
  • 5
    AM
  • 6
    AM
  • 7
    AM
  • 8
    AM
  • 9
    AM
  • 10
    AM
  • 11
    AM
  • 12
    PM
  • 1
    PM
  • 2
    PM
  • 3
    PM
  • 4
    PM
  • 5
    PM
  • 6
    PM
  • 7
    PM
  • 8
    PM
  • 9
    PM
  • 10
    PM
  • 11
    PM
JST (UTC+09:00)
Japan Standard Time
15:31:00
Oct 19
  • 12
    AM
  • 1
    AM
  • 2
    AM
  • 3
    AM
  • 4
    AM
  • 5
    AM
  • 6
    AM
  • 7
    AM
  • 8
    AM
  • 9
    AM
  • 10
    AM
  • 11
    AM
  • 12
    PM
  • 1
    PM
  • 2
    PM
  • 3
    PM
  • 4
    PM
  • 5
    PM
  • 6
    PM
  • 7
    PM
  • 8
    PM
  • 9
    PM
  • 10
    PM
  • 11
    PM

This simple KST to JST time zone converter allows you to quickly and visually understand the time difference between KST (KST) and JST (JST).

2026-10-19: 3:31 PM KST

3:31 PM JST

KST: UTC+09:00 · JST: UTC+09:00

Just hover over the colored hour tiles, and you’ll instantly see the corresponding time in both zones. The time difference between KST and JST is 0 hours 0 minutes, with JST being ahead. For example, if it is 3:31 PM KST, the equivalent time in JST will be 3:31 PM JST.

KST to JST hour-by-hour

2026-10-19 · KST
Korea Standard TimeJapan Standard Time
00:00 KST00:00 JST
00:30 KST00:30 JST
01:00 KST01:00 JST
01:30 KST01:30 JST
02:00 KST02:00 JST
02:30 KST02:30 JST
03:00 KST03:00 JST
03:30 KST03:30 JST
04:00 KST04:00 JST
04:30 KST04:30 JST
05:00 KST05:00 JST
05:30 KST05:30 JST
06:00 KST06:00 JST
06:30 KST06:30 JST
07:00 KST07:00 JST
07:30 KST07:30 JST
08:00 KST08:00 JST
08:30 KST08:30 JST
09:00 KST09:00 JST
09:30 KST09:30 JST
10:00 KST10:00 JST
10:30 KST10:30 JST
11:00 KST11:00 JST
11:30 KST11:30 JST
12:00 KST12:00 JST
12:30 KST12:30 JST
13:00 KST13:00 JST
13:30 KST13:30 JST
14:00 KST14:00 JST
14:30 KST14:30 JST
15:00 KST15:00 JST
15:30 KST15:30 JST
16:00 KST16:00 JST
16:30 KST16:30 JST
17:00 KST17:00 JST
17:30 KST17:30 JST
18:00 KST18:00 JST
18:30 KST18:30 JST
19:00 KST19:00 JST
19:30 KST19:30 JST
20:00 KST20:00 JST
20:30 KST20:30 JST
21:00 KST21:00 JST
21:30 KST21:30 JST
22:00 KST22:00 JST
22:30 KST22:30 JST
23:00 KST23:00 JST
23:30 KST23:30 JST

Korea Standard Time

UTC+09:00

Fixed UTC offset. For seasonal local time, select a city or ET, CT, MT, PT.

KST · UTC+09:00

Japan Standard Time

UTC+09:00

Fixed UTC offset. For seasonal local time, select a city or ET, CT, MT, PT.

JST · UTC+09:00

Frequently Asked Questions

2026-10-19 · Same local time. KST: UTC+09:00; JST: UTC+09:00.

2026-10-19 · 15:31 KST → 15:31 JST.

Weekday overlap (Mon–Fri, 09:00–17:00 in both places): KST: 09:00 KST – 17:00 KST ↔ JST: 09:00 JST – 17:00 JST

Same local time

Date → Select range → .ics. 2026-10-19 · 15:31 KST → 15:31 JST.

KST: Fixed UTC offset. For seasonal local time, select a city or ET, CT, MT, PT. JST: Fixed UTC offset. For seasonal local time, select a city or ET, CT, MT, PT.