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Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates, entirely in your browser.

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How it works

  1. See the current Unix timestamp, updating live.
  2. Enter a timestamp (seconds or milliseconds) to convert it to a date.
  3. Or pick a date and time to convert it to a Unix timestamp.

Frequently asked questions

Is anything sent to a server?
No. All conversion happens locally using your browser's own Date object and your device's clock.
Does it handle both seconds and milliseconds?
Yes — a 13-or-more-digit number is treated as milliseconds; anything shorter is treated as seconds.
What time zone are results shown in?
Both: the exact UTC time and your browser's local time zone are shown side by side, along with ISO 8601.