Catalytic WizAlert — free, private online tools

Time Zone Converter

Convert a time across cities and time zones, with daylight saving handled automatically — perfect for scheduling meetings.

See a time everywhere at once

Convert a date and time from one time zone to many others. Daylight saving time is applied automatically for each location and date.

How to use

  1. By default it shows the current time live. Pick a date and time to convert a specific moment.
  2. Choose which time zone that time is in. It starts as your own.
  3. Add cities with the search box. Remove one with ✕, or make it the source with ↗.
  4. Click “Back to now” to return to the live clock.

Meeting planner

  • Each column is one hour of the chosen day. Each row shows the local time in a city.
  • Highlighted cells are working hours (9:00–18:00), lighter cells are waking hours, and dark cells are night.
  • Click a column to see that time in every city.
  • A coloured edge marks where a city crosses midnight into the next day.

Your list of cities is remembered in this browser.