See the live UTC time next to the current time in South Korea, check today's real offset, and roll through any UTC time to find the matching KST time — including when the two zones fall on different dates.
Korea Standard Time
Coordinated Universal Time
United Kingdom Time
THE CLOCKS ABOVE ALWAYS SHOW THE LIVE CURRENT TIME. THE ROLLER BELOW IS A LOOKUP TOOL — ROTATING IT NEVER CHANGES THEM.
KST is 9 hours ahead of UTC
GMT/BST is 1 hour ahead of UTC
South Korea is 8 hours ahead of United Kingdom
| UTC | KST | Date |
|---|---|---|
| 00:00 | 09:00 | Same day |
| 01:00 | 10:00 | Same day |
| 02:00 | 11:00 | Same day |
| 03:00 | 12:00 | Same day |
| 04:00 | 13:00 | Same day |
| 05:00 | 14:00 | Same day |
| 06:00 | 15:00 | Same day |
| 07:00 | 16:00 | Same day |
| 08:00 | 17:00 | Same day |
| 09:00 | 18:00 | Same day |
| 10:00 | 19:00 | Same day |
| 11:00 | 20:00 | Same day |
| 12:00 | 21:00 | Same day |
| 13:00 | 22:00 | Same day |
| 14:00 | 23:00 | Same day |
| 15:00 | 00:00 | Next day in South Korea |
| 16:00 | 01:00 | Next day in South Korea |
| 17:00 | 02:00 | Next day in South Korea |
| 18:00 | 03:00 | Next day in South Korea |
| 19:00 | 04:00 | Next day in South Korea |
| 20:00 | 05:00 | Next day in South Korea |
| 21:00 | 06:00 | Next day in South Korea |
| 22:00 | 07:00 | Next day in South Korea |
| 23:00 | 08:00 | Next day in South Korea |
Coordinated Universal Time (UTC) is the world's time standard: it never shifts for seasons and every other zone is described as an offset from it. Korea Standard Time (KST) is the clock used in South Korea. Converting UTC to KST means adding that offset to the UTC reading.
Korea Standard Time covers the whole country and shares its offset with Tokyo.
Take the UTC time, apply the current KST offset shown in the live panel above, and roll the date forward or back if the result crosses midnight. The interactive roller does all three steps for you: the left drum is UTC, the right drum is KST, and a day badge appears whenever the local date differs.
KST has no daylight saving changes, so the offset to UTC is stable all year. It is still calculated live from the Asia/Seoul IANA database rather than hard-coded.
The reference table below the tool lists every UTC half hour against the matching KST time for today, so you can copy a conversion without touching the roller.
South Korea does not observe daylight saving time. KST is always UTC +09:00, the same as Japan.