Free time and date tool
UTC to KST Time Converter
Enter a UTC date and time to see the matching local time in Seoul. The converter applies the Asia/Seoul rules for that exact date.
✓ Your time and date calculations are not stored.
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How it works
Convert UTC to Seoul local time using the Asia/Seoul IANA time zone and date-specific daylight-saving rules.
- Keep UTC as the source or destination.
- Select a named city or IANA time zone for the local side.
- Enter the date as well as the time so seasonal rules can be applied.
Example
For example, 12:00 UTC is converted using the offset that applies in Asia/Seoul on the selected date, so seasonal clock changes are handled automatically.
How accuracy is handled
UTC never observes daylight saving time; the selected local IANA zone may change offset by date.
Privacy: Inputs are validated and calculations use calendar-aware IANA time-zone rules.
Popular UTC conversions
Open a date-aware converter preset for frequently searched zones. Each page uses the listed IANA location rather than a fixed abbreviation.
Frequently asked questions
Is UTC affected by daylight saving time?
No. UTC does not move seasonally.
Why use a named zone instead of an offset?
Named zones preserve seasonal and historical clock rules.