How many timezones does FreeTimeZone support?

FreeTimeZone supports all IANA timezones — over 400 cities worldwide. The database includes major cities from every continent.

Is FreeTimeZone free to use?

Yes, completely free. No sign-up, no usage limits, no data sent to servers. Everything runs in your browser.

Does it handle Daylight Saving Time?

Yes. FreeTimeZone uses the browser's built-in Intl API which automatically handles DST transitions for all supported timezones.

Can I save my selected cities?

Yes. World Clock cities are saved to localStorage and persist between browser sessions. No account needed.

How accurate are the time conversions?

Conversions use the Intl.DateTimeFormat API built into modern browsers. They follow the official IANA timezone database, which is the same standard used by operating systems worldwide.

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How to Use FreeTimeZone

Step-by-step guides for every tool. Get started in seconds.

Quick Start

Choose a Tool

Select any tool from the navigation bar — World Clock, Converter, Meeting Planner, Countdown, Flight Time, or Jet Lag.

Add Cities or Timezones

Search from 400+ cities worldwide and add them to your workspace.

Convert or Compare

Convert times between zones, find overlapping working hours, set countdowns, or plan travel timing.

Copy & Share

Copy converted times, export meeting schedules, or share countdowns via URL.

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