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Time Zone Converter

What is this tool?

A time zone converter and meeting planner built on the browser's Intl API. It anchors a wall-clock time to a base zone, then shows the same instant, with its UTC offset, in each zone on your list.

When to use it

  • Finding a meeting time that works for people in different countries
  • Announcing a launch or webinar time and listing it for several regions
  • Checking what time a deadline in another zone lands in yours
  • Coordinating a support handoff between teams
  • Sanity-checking a calendar invite's time before sending it

How to use it

  1. 1Set the date and time, and choose the zone you're entering it in
  2. 2Add the other time zones you care about from the dropdown
  3. 3Read the converted time and UTC offset for each zone in the list
  4. 4Remove any zone you no longer need with the x
  5. 5Change the base time to see every row update together

Frequently asked questions

Does it handle daylight saving time?

Yes — conversions use the Intl API's zone data, which includes each zone's DST rules for the date you pick.

How many zones can I compare?

As many as you like — each one adds a row to the results list.

Which time zones are available?

The full IANA time zone database your browser ships with, shown by their standard names like Europe/Paris.

Is any data sent to a server?

No — every conversion runs locally using your browser's built-in internationalization support.