🕐 Seoul to Amsterdam Time Converter

Amsterdam is 7 hours behind Seoul for most of the year: when it is 10:00 am in Seoul it is 3:00 am in Amsterdam. In offset terms Seoul is on UTC+09:00 and Amsterdam is on UTC+01:00 in January, and UTC+09:00 and UTC+02:00 in July. The converter above works from your browser’s own time zone data, so the figure it shows is the one in force today rather than the one that was in force when this page was written.

The difference is not constant, because only one of the two cities observes daylight saving. In 2026, Seoul does not change at all and Amsterdam changes on 29 March and 25 October. That leaves 3 distinct periods in the year, and the table below gives the exact dates. It is the short windows that catch people out: a recurring call booked in one city’s clock silently moves in the other’s.

For arranging anything, the number that matters is the overlap. Seoul works 09:00 to 18:00 and Amsterdam works 09:00 to 17:30, which leaves 16:00 to 18:00 in Seoul — 09:00 to 11:00 in Amsterdam — as the window when both are open. That is 2 hours of shared working time. Both cities work Monday to Friday, so only the clock has to be reconciled.

Two local details worth knowing. Korea keeps UTC+09:00 year-round, the same clock as Japan, so the two are interchangeable for scheduling. Dutch meetings start on the minute and finish on the minute, and a four-day week is common enough that Fridays are worth checking.

The safest way to write a time for these two cities is to give both, as in "10:00 Seoul / 03:00 Amsterdam", or to give the UTC offset. Abbreviations are the trap: Seoul is on KST for part of the year and KST for the rest, and the same three letters are reused in other parts of the world for entirely different offsets.

The formula

local Seoul

The time you enter, on the Seoul clock

offset

Each city’s UTC offset at that moment, read live from the IANA time zone database in your browser

−7

The difference in hours that holds for most of 2026: Amsterdam is 7 hours behind Seoul

day shift

Whether the converted time falls on the previous, same or next calendar day in Amsterdam

How it works, step by step

1. Enter a time in Seoul using the 24-hour hour box and the minute box — 15:30 is hour 15, minute 30.
2. Your browser reports the UTC offset in force in Seoul and in Amsterdam for that moment, so a date near a daylight saving transition is handled correctly rather than with a fixed 7 hour rule.
3. The second offset minus the first gives the difference, which is added to the time you entered. A result past midnight is marked as the next or previous day, because that is where most conversion mistakes live.
4. The panel also shows the current time in both cities, the date in Amsterdam, and whether the two offices are open at the same moment.

Worked examples

How to read your score

Frequently asked questions

Seoul to Amsterdam: every hour, every period of 2026, and meeting slots

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