Time Zone Converter

Convert a date and time between cities and IANA zones. Includes daylight saving rules, UTC offsets, and a live world clock. Free, no signup.

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World clock

Same instant shown in popular cities. Updates with your conversion.

How to use this time zone converter

  1. Choose the From and To time zones (city names map to IANA zones).
  2. Enter a local date and time, or tap Use now.
  3. Read the converted time, offsets, and world clock row.

Conversions use your browser’s time zone database, so daylight saving transitions are applied automatically.

FAQ

How does a time zone converter work?

It maps your From local time to a UTC instant, then formats that instant in the To zone — including DST where applicable.

UTC vs GMT?

UTC is the civil standard. GMT often means UTC+0 in everyday use. This tool lists UTC explicitly.

Is daylight saving handled?

Yes. IANA zones such as America/New_York and Europe/London include DST rules in your browser.

Is my data uploaded?

No. Everything runs locally in your browser.