GMT to KST Converter

It takes three quick steps:

1. Click the GMT field on the left and pick the time you want to convert.
2. The matching KST time updates on the right automatically — there’s no button to press.
3. Need a different day? Click the date field and the result follows, rolling over if it crosses midnight.

KST is 9 hours ahead of GMT. In everyday terms, once you know the time on one side you just add 9 hours to get the other — so a call between London (winter) and Seoul is always 9 hours apart.

Right now the time in Korea Standard Time (KST) is Tuesday, June 30, 2026 · 2:53:55 AM. It ticks every second, so you’re always looking at the live KST clock.

And in Greenwich Mean Time (GMT), it’s currently Monday, June 29, 2026 · 5:53:55 PM. Compare the two and the 9 hours gap is easy to see.

For example, a 9:00 AM GMT meeting takes place at 6:00 PM KST. The trick is to aim for a slot that lands inside normal working hours on both sides. Once you’ve found a time, hit Share on the converter to copy a link with the time built in — easy to send to a colleague. Juggling three or more zones? The meeting planner highlights the hours that overlap for everyone.

The labels GMT and KST are fixed offsets, so the result on this page is always exact. Neither side changes its clocks for daylight saving, so the difference you see here is the same in summer and winter.

We don’t guess. GMT and KST times are worked out from the official IANA time zone database, the trusted standard that operating systems use worldwide. Because daylight-saving rules and regional offsets do change over time, we track those updates rather than relying on a fixed number — which is exactly where many converters slip up.