Seoul
London
Convert KST to GMT
Korea Standard Time to Greenwich Mean Time — London is 8 hours behind Seoul
Quick Facts
Time Difference
-8 hours
KST Full Name
Korea Standard Time
GMT Full Name
Greenwich Mean Time
KST to GMT Conversion Table
Related Conversions
About KST and GMT Time Zones
KST (Korea Standard Time) is UTC+9 and covers cities like Seoul, Busan, Incheon. GMT (Greenwich Mean Time) is UTC+0 and covers cities like London, Dublin, Lisbon.
When it's 12:00 PM (noon) in Seoul (KST), it's 4:00 AM in London (GMT). The time difference between KST and GMT is 8 hours — London 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 London with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between KST and GMT?
London (GMT) is 8 hours behind Seoul (KST). The offset is -8 hours.
Is GMT ahead or behind KST?
GMT is 8 hours behind KST. KST is UTC+9 and GMT is UTC+1.
When it's 12:00 PM in Seoul, what time is it in London?
When it's 12:00 PM (noon) in Seoul (KST), it's 4:00 AM in London (GMT).
When it's 5:00 PM in Seoul, what time is it in London?
When it's 5:00 PM in Seoul (KST), it's 9:00 AM in London (GMT).