KST to GMT Time Converter

Korea Standard Time → Greenwich Mean Time

KST

UTC+9

Korea Standard Time

offset
-9h
GMT is 9h behind

GMT

UTC+0

Greenwich Mean Time

GMT observes DST — offset shifts ±1h during transitions

Korea Standard Time (KST) is 9 hours behind Greenwich Mean Time (GMT). When it is noon in KST, it is 3 AM in GMT. This offset may change during Daylight Saving Time transitions.

Best Meeting Times — KST & GMT

Recommended windows where both KST and GMT participants are within working hours (8 AM–6 PM).

KSTGMTRatingDetail page
5 PM
8 AM
Best
6 PM
9 AM
Best
4 PM
7 AM
Good
7 PM
10 AM
Good

Tip: When scheduling between KST and GMT, aim for the “Best” windows above. These times keep both parties within normal working hours, avoiding early-morning or late-evening fatigue. Note that one of these time zones observes Daylight Saving Time — the offset may shift ±1 hour around transition dates.

Frequently Asked Questions — KST to GMT

Korea Standard Time (KST) is 9 hours behind Greenwich Mean Time (GMT). KST is UTC+9 and GMT is UTC+0. This offset may shift by ±1 hour during Daylight Saving Time transitions.