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Time Zone Converter

Convert a date and time across time zones — compare cities side by side.

100% private — runs entirely in your browser. Your data is processed on your device and never sent to the internet.

About this tool

This free time zone converter takes a date and time in one zone and shows what it is in cities around the world. Add as many zones as you like to plan a meeting or call across countries, and each row shows the local date, time and UTC offset.

It uses your browser's built-in time-zone database (including daylight saving), so everything runs on your device — nothing is uploaded.

Features

  • Convert from any source zone to many at once
  • Add and remove cities to build your own board
  • Shows the day, time and UTC offset for each zone
  • Handles daylight saving automatically
  • One-click Now to start from the current moment

Common uses

  • Plan a meeting or call across time zones
  • Check what time it is in another country
  • Coordinate a launch or deadline worldwide

How to use it

  • Set the date and time and the source zone (or press Now)
  • Add the time zones you want to compare
  • Read each city's local time; remove any you don't need

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