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Unix Timestamp Converter
Convert Unix timestamps in seconds or milliseconds to UTC dates, or convert ISO dates back to Unix time.
Unix timestamps in seconds and milliseconds are supported. Include Z or a UTC offset in ISO dates.
Processing happens in your browser. Your input is not sent to the server.
About this tool
Unix timestamps count elapsed time from 1970-01-01 UTC. For a date-to-timestamp conversion, include a Z suffix or explicit UTC offset to avoid ambiguous local times.
Input stays in this browser. It is not added to favorites or recent-tool history.