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Unix Timestamp Converter
Convert a Unix timestamp in seconds or milliseconds to UTC and local time, or the other way round.
Seconds, or milliseconds when the number is 100 billion or more.
Seconds and milliseconds
Unix time counts seconds since 1970-01-01 00:00:00 UTC. JavaScript and some APIs count milliseconds instead, which is a number about a thousand times larger. This page treats 100 billion and above as milliseconds.