Timestamp Converter

Convert Unix epoch timestamps to human-readable dates and back. UTC, local time, ISO 8601, relative time.

Current Time

Live

Unix (seconds)

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UTC

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Local

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Unix Timestamp

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What is Unix Time?

Unix time counts seconds since January 1, 1970 00:00:00 UTC (the "Unix epoch"). Used universally in programming, databases, and APIs.

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Seconds vs Milliseconds

Unix timestamps are typically in seconds (10 digits). JavaScript uses milliseconds (13 digits). This tool auto-detects both.

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UTC vs Local

UTC is Coordinated Universal Time — no timezone offset. Local time applies your system timezone. Always use UTC in APIs.

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ISO 8601

The international date standard: 2025-01-01T00:00:00Z. The Z means UTC. Used in JSON, REST APIs, and logs.