Time Zone Converter

How to use

1. Set Source Time — Enter a date & time and the timezone it is expressed in.
2. Add Targets — Pick any IANA timezone you want to convert into — add as many as you like.
3. Read the Table — See the equivalent local time, weekday, and offset in every target zone.

The Time Zone Converter turns any moment in any IANA timezone into its equivalent across every other zone you care about — meeting planning, broadcast scheduling, and remote-team coordination made easy.

Features

• 400+ IANA timezones via the browser's Intl APIs.
• Source-time editor with full date and minute precision.
• Unlimited target zones — add or remove as needed.
• Daylight Saving Time aware (historical and future rules).

Privacy

Every calculation runs in your browser. We never see your meeting times, your timezone, or who you are scheduling with.

Frequently asked questions

How does it handle Daylight Saving Time?

The browser's Intl APIs and the IANA tz database power every conversion, so DST transitions and historical rule changes are automatically respected.

Which timezones are supported?

All 400+ IANA zones your browser knows about (Intl.supportedValuesOf). On older browsers we fall back to a curated set of 25 popular zones.

Does my schedule data get uploaded?

No — every conversion runs locally in JavaScript. The tool never sends meeting times or dates over the network.

Why does my time differ from another converter by an hour?

Almost always a DST transition. Double-check whether the source date is inside or outside DST for that zone.

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