Seoul
UTC
Convert KST to UTC
Korea Standard Time to Coordinated Universal Time — UTC is 9 hours behind Seoul
Quick Facts
Time Difference
-9 hours
KST Full Name
Korea Standard Time
UTC Full Name
Coordinated Universal Time
KST to UTC Conversion Table
Related Conversions
About KST and UTC Time Zones
KST (Korea Standard Time) is UTC+9 and covers cities like Seoul, Busan, Incheon. UTC (Coordinated Universal Time) is UTC+0 and covers cities like Universal reference time.
When it's 12:00 PM (noon) in Seoul (KST), it's 3:00 AM in UTC (UTC). The time difference between KST and UTC is 9 hours — UTC is behind Seoul.
The 9-hour difference makes real-time overlap challenging — early morning calls (7–9 AM KST) work best.
Use our world clock tool to compare Seoul and UTC with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between KST and UTC?
UTC (UTC) is 9 hours behind Seoul (KST). The offset is -9 hours.
Is UTC ahead or behind KST?
UTC is 9 hours behind KST. KST is UTC+9 and UTC is UTC+0.
When it's 12:00 PM in Seoul, what time is it in UTC?
When it's 12:00 PM (noon) in Seoul (KST), it's 3:00 AM in UTC (UTC).
When it's 5:00 PM in Seoul, what time is it in UTC?
When it's 5:00 PM in Seoul (KST), it's 8:00 AM in UTC (UTC).