Time Zone Converter
Convert a date and time between time zones, with daylight saving time handled automatically.
Converted time
21:30
2026-09-28
How it works
Pick a date, time, and source time zone, then choose the time zone you want it converted to. The conversion runs on your browser's own time zone database, the same standard system behind clocks and calendars on most devices — so it stays correct as daylight saving rules change.
Frequently asked questions
- Does this account for daylight saving time?
- Yes. The conversion reads each time zone's actual rules for the specific date you enter, so it correctly reflects daylight saving time where it applies, without any fixed offsets.
- Why does the date sometimes change after converting?
- Converting between time zones can push a time into the previous or next calendar day — the result shows a note like "+1 day" or "-1 day" whenever that happens.
- Which time zones are supported?
- A curated list of commonly used time zones, identified by their standard IANA names (e.g. Europe/Berlin, Asia/Tokyo).