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Convert Korean Time to Coordinated Universal Time (UTC)

KST · UTC+9 → UTC · UTC+0

KST is 9 hours ahead of UTC

Seoul · UTC+9

Tuesday, 8 September 2026

· UTC

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
SeoulUTC+9 · +09:00
0003060912151821
UTC · +00:00
1518210003060912

No overlap in standard working hours. Closest workable window: 16:00–23:00 in Seoul, which is 07:00–14:00 in .

Working (09–18) Awake, off the clock Asleep (23–07)

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16:07 Tue 8 Sep Seoul = 07:07 Tue 8 Sep

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Hour-by-hour conversion

Seoul (KST) (UTC)
00:0015:00prev. day
01:0016:00prev. day
02:0017:00prev. day
03:0018:00prev. day
04:0019:00prev. day
05:0020:00prev. day
06:0021:00prev. day
07:0022:00prev. day
08:0023:00prev. day
09:0000:00
10:0001:00
11:0002:00
12:0003:00
13:0004:00
14:0005:00
15:0006:00
16:0007:00Now
17:0008:00
18:0009:00
19:0010:00
20:0011:00
21:0012:00
22:0013:00
23:0014:00

About this conversion

KST here means Korean Time, represented by Seoul (Asia/Seoul), currently UTC+9. UTC means Coordinated Universal Time (UTC), represented by (UTC), currently UTC+0.

KST is used by 2 zones, including South Korea. If you meant a different one, see every meaning of KST.

Working hours are shown as 09:00–18:00 local, and sleeping hours as 23:00–07:00. The hour table is anchored on the current day in Seoul; day boundaries are marked where the date differs.

Quick answers

  • 09:00 KST is 00:00 UTC
  • 12:00 KST is 03:00 UTC
  • 15:00 KST is 06:00 UTC
  • 18:00 KST is 09:00 UTC

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