Epoch Timestamp Converter

Unix time ⇄ human date, both directions — seconds or milliseconds, UTC or local.

Quick answer: Free Unix timestamp converter: convert epoch seconds/milliseconds to human dates and back, with UTC and local time. Now button included.

Timestamp → Date

–Your local time

–UTC

Date → Timestamp

–Seconds

–Milliseconds

How to use

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About this tool

Unix time counts seconds since 1970-01-01 UTC — the standard time format for databases, APIs and logs. Millisecond timestamps (13 digits, common in JavaScript/Java) are detected automatically against 10-digit second timestamps. Debug API dates, expiry claims (JWT exp) and log lines in seconds.

FAQ

Seconds or milliseconds?

10 digits = seconds, 13 digits = milliseconds. This tool auto-detects. 1e12–1e14 boundary values are shown both ways if ambiguous.

What happens at 2038?

32-bit signed seconds overflow in January 2038 — modern 64-bit systems are unaffected.

Is epoch affected by time zones?

No — Unix time is always UTC; display converts to local zones.

People also searched

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Epoch Timestamp Converter

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Unix Timestamp Converter