KST to UTC Converter
UTC is 9 hours behind KST
KST to UTC Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in UTC
| KST | UTC |
|---|---|
| 12:00 AM | 3:00 PM -1d |
| 1:00 AM | 4:00 PM -1d |
| 2:00 AM | 5:00 PM -1d |
| 3:00 AM | 6:00 PM -1d |
| 4:00 AM | 7:00 PM -1d |
| 5:00 AM | 8:00 PM -1d |
| 6:00 AM | 9:00 PM -1d |
| 7:00 AM | 10:00 PM -1d |
| 8:00 AM | 11:00 PM -1d |
| 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 |
Converting Korea Standard Time to Coordinated Universal Time
Korea Standard Time (KST) and Coordinated Universal Time (UTC) are separated by a 9 hours time difference. UTC is 9 hours behind KST. KST is UTC+9, used in South Korea, while UTC is UTC+0.
When converting from KST to UTC, the key reference points to remember are: 9:00 AM KST equals 12:00 AM UTC, 12:00 PM noon KST equals 3:00 AM UTC, and 5:00 PM KST equals 8:00 AM UTC. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across KST and UTC
For professionals scheduling meetings between KST and UTC, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 9 hours difference, the window of overlap may be limited, making early morning or late evening calls necessary for one party. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
KST does not observe Daylight Saving Time, maintaining UTC+9 year-round. UTC does not observe DST, staying at UTC+0 year-round.