Time Zone Converter

Convert a local date and time from one IANA time zone to another. See the source time, target time, UTC instant, and Unix timestamp.

Client-side conversion using browser time zone rules. No sign-up and no upload.
Source Zone Time
Target Zone Time
UTC ISO
Unix Seconds

Timezone conversion without uploads

This tool uses your browser's built-in timezone database. The source defaults to your local browser zone, then you can convert to UTC or any supported IANA zone.

ISO 8601 Converter Unix Timestamp Converter Date Difference Calculator

FAQ

What is an IANA time zone? It is a named zone like America/New_York or Europe/London that includes daylight-saving rules.

Is the conversion exact? It follows the time zone data available in your browser for the selected date.