KST to GMT Converter
GMT is 9 hours behind KST. 9:00 AM KST = 12:00 AM GMT.
GMT is 9 hours behind KST. To convert KST to GMT, subtract 9 hours from the KST time: 9:00 AM KST = 12:00 AM GMT.
KST (Korea Time) is used in South Korea. GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year.
The UK is on GMT only in winter; in summer it uses BST (UTC+1).
KST to GMT time conversion table
KST to GMT on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| KST | GMT | Day |
|---|---|---|
| 12:00 AM KST | 3:00 PM GMT | previous day |
| 1:00 AM KST | 4:00 PM GMT | previous day |
| 2:00 AM KST | 5:00 PM GMT | previous day |
| 3:00 AM KST | 6:00 PM GMT | previous day |
| 4:00 AM KST | 7:00 PM GMT | previous day |
| 5:00 AM KST | 8:00 PM GMT | previous day |
| 6:00 AM KST | 9:00 PM GMT | previous day |
| 7:00 AM KST | 10:00 PM GMT | previous day |
| 8:00 AM KST | 11:00 PM GMT | previous day |
| 9:00 AM KST | 12:00 AM GMT | night |
| 10:00 AM KST | 1:00 AM GMT | night |
| 11:00 AM KST | 2:00 AM GMT | night |
| 12:00 PM KST | 3:00 AM GMT | night |
| 1:00 PM KST | 4:00 AM GMT | night |
| 2:00 PM KST | 5:00 AM GMT | night |
| 3:00 PM KST | 6:00 AM GMT | — |
| 4:00 PM KST | 7:00 AM GMT | — |
| 5:00 PM KST | 8:00 AM GMT | — |
| 6:00 PM KST | 9:00 AM GMT | — |
| 7:00 PM KST | 10:00 AM GMT | — |
| 8:00 PM KST | 11:00 AM GMT | — |
| 9:00 PM KST | 12:00 PM GMT | — |
| 10:00 PM KST | 1:00 PM GMT | — |
| 11:00 PM KST | 2:00 PM GMT | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert KST to GMT
Subtract 9 hours from the KST time to get GMT.
Example: 9:00 AM KST = 12:00 AM GMT.
Across midnight: 1:00 AM KST = 4:00 PM GMT (previous day). The date changes, so always check the day as well as the hour.
Time difference between KST and GMT
The time difference between KST and GMT is 9 hours all year – GMT is behind KST.
KST and GMT during daylight saving time
- KST does not observe daylight saving time; it stays on UTC+9 all year.
- GMT does not observe daylight saving time; it stays on UTC+0 all year.
Best time for a meeting between KST and GMT
KST and GMT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM KST, which is 10:00 PM GMT.
KST to GMT FAQ
What is the time difference between KST and GMT?
GMT is 9 hours behind KST all year. 9:00 AM KST = 12:00 AM GMT.
What is 9 AM KST in GMT?
9:00 AM KST is 12:00 AM GMT.
What is 12 PM (noon) KST in GMT?
12:00 PM KST is 3:00 AM GMT.
Is GMT ahead of or behind KST?
GMT is 9 hours behind KST, so it is earlier in GMT than in KST.
Does KST change for daylight saving time?
No. KST stays on the same offset all year, so conversions never shift for daylight saving time.
Does GMT change for daylight saving time?
No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between KST and GMT?
KST and GMT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM KST, which is 10:00 PM GMT.
Related conversions
Convert GMT to KST
Convert KST to other time zones
Convert other time zones to GMT
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.