Time Zone Converter

Q: Which time zones are supported?

All IANA time zones. Daylight saving time is handled.

Q: What happens on DST transitions?

Invalid times are rejected; ambiguous times use the earlier offset.

Q: Can I share a prefilled link?

Yes, the URL captures your inputs for sharing.

Convert a date & time between two IANA time zones — DST-aware.

Date & time (in source time zone) Interpreted as local wall time in the selected source time zone. From timezone (IANA) To timezone (IANA)

Quick presets

Warsaw → New York
Warsaw → London
UTC → Your TZ
PST → EST
Tokyo → Sydney

Presets use current time and run conversion automatically.

From

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Input (source local) UTC Output (target local) ISO 8601 (target) RFC 3339 (target) Unix (seconds) Unix (milliseconds)

How it works

We interpret your input as a local wall time in the source time zone, handle DST gaps/overlaps, pivot through UTC, and convert to the target time zone.

Warsaw → New York
London → Tokyo
UTC → Warsaw

FAQ

Which time zones are supported?
All IANA zones (e.g., Europe/Warsaw, America/New_York). DST is handled automatically.

What happens on DST transitions?
Invalid times (spring forward gap) are rejected; ambiguous times (fall back) pick the earlier offset.

Can I share a prefilled link?
Yes. The page URL keeps your input and selected zones for easy sharing.

Quick presets

Related

FAQ