Convert KST to UTC
Korea Standard Time (KST) to Coordinated Universal Time (UTC)
When it's 12:00 PM in Seoul, it's 3:00 AM UTC
Interactive Converter
Pick any time and date to convert between KST and UTC.
KST to UTC Conversion Table
Full 24-hour comparison. Business hours (9 AM -- 6 PM) are highlighted.
| Seoul (KST) | UTC (UTC) |
|---|---|
| 12:00 AM | 3:00 PM -1 day |
| 1:00 AM | 4:00 PM -1 day |
| 2:00 AM | 5:00 PM -1 day |
| 3:00 AM | 6:00 PM -1 day |
| 4:00 AM | 7:00 PM -1 day |
| 5:00 AM | 8:00 PM -1 day |
| 6:00 AM | 9:00 PM -1 day |
| 7:00 AM | 10:00 PM -1 day |
| 8:00 AM | 11:00 PM -1 day |
| 9:00 AM | 12:00 AM |
| 10:00 AM | 1:00 AM |
| 11:00 AM | 2:00 AM |
| 12:00 PM | 3:00 AM |
| 1:00 PM | 4:00 AM |
| 2:00 PM | 5:00 AM |
| 3:00 PM | 6:00 AM |
| 4:00 PM | 7:00 AM |
| 5:00 PM | 8:00 AM |
| 6:00 PM | 9:00 AM |
| 7:00 PM | 10:00 AM |
| 8:00 PM | 11:00 AM |
| 9:00 PM | 12:00 PM |
| 10:00 PM | 1:00 PM |
| 11:00 PM | 2:00 PM |
Best Meeting Window
Top meeting times for teams in KST and UTC (9 AM -- 6 PM work hours, 1-hour meeting).
1 of 2 members within working hours. 1 in mid-day range (9 AM–5 PM). Outside work hours for UTC.
1 of 2 members within working hours. 1 in mid-day range (9 AM–5 PM). Outside work hours for UTC.
1 of 2 members within working hours. 1 in mid-day range (9 AM–5 PM). Outside work hours for Seoul.
Time Difference & DST
UTC is 9 hours behind KST all year.
| Dates | Seoul | UTC | Difference |
|---|---|---|---|
| Jan 1, 2026 – Dec 31, 2027 | UTC+9 | UTC±0 | -9h |
Seoul, UTC do not use daylight saving time.
Use the interactive converter for a specific date.
Major Cities
Korea Standard Time (KST)
- Seoul
- Busan
- Incheon
Coordinated Universal Time (UTC)
- UTC