Timezone Converter
Convert any date/time from one IANA time zone to another.
Quick answer: Timezone Converter: convert any date/time from one IANA time zone to another. Runs entirely in your browser, free, no signup.
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Converting a time between two places is deceptively hard because time zones are political, not astronomical. Offsets shift for daylight saving, and the exact date those shifts happen differs by country — the EU, the US and Australia all change on different weekends, and the southern hemisphere changes in the opposite direction. This tool leans on the IANA time zone database baked into your browser, which encodes every historical and current rule, so a conversion for a date in July gives a different answer than the same wall-clock time in January when a DST boundary sits between them.
Always identify zones by their IANA Region/City name such as Europe/Amsterdam or America/New_York rather than by abbreviations like CST or IST. Those abbreviations are ambiguous — CST is Central Standard Time in the US, but also China Standard Time and Cuba Standard Time — and they do not tell the software which DST rules to apply. The city-based names are unambiguous and future-proof.
A classic pitfall is scheduling a recurring event across a DST changeover: a 9:00 AM call in New York will drift by an hour relative to London for the two or three weeks each spring and autumn when the two regions have not yet both switched. If you are picking a slot for a distributed team rather than converting a single instant, the meeting-time finder lays out every participant's local hour at once, and for machine timestamps the epoch batch converter handles Unix values in bulk.
Frequently asked questions
- Is the timezone converter free?
- Yes — free, no signup.
- Does it handle DST?
- Yes — IANA rules cover DST changes for every supported zone.
- Are my times uploaded?
- No — every conversion runs in your browser.
- Which zones are supported?
- Every IANA zone your browser knows about (~600). Use Region/City format like Europe/Amsterdam.
- Why is my answer one hour off?
- Most likely a DST boundary you crossed. Double-check the date — the offset can change within a year for the same zone.