Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Everything runs in your browser — nothing is sent to the server.
Current Unix Timestamp
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Timestamp to Date
Supports seconds (10 digits) and milliseconds (13 digits) — auto-detected.
UTC
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Local Time (-)
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ISO 8601
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RFC 2822
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Relative
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Timestamp (seconds / milliseconds)
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Date to Timestamp
Unix Timestamp (seconds)
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Unix Timestamp (milliseconds)
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ISO 8601
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Relative
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About Unix Timestamps
Unix time (also called POSIX time or epoch time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC — the Unix epoch.
Timestamps in seconds are 10 digits (until 2286). Timestamps in milliseconds are 13 digits. This tool auto-detects the format.
Common formats: ISO 8601 (2024-01-15T12:00:00Z) and RFC 2822 (Mon, 15 Jan 2024 12:00:00 +0000).