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Timestamp Converter

Convert Unix timestamps to human dates and vice versa.

Timestamp Converter — Free Online Unix Epoch to Date & Time Converter

UtilityBox's free timestamp converter is the fastest way to convert Unix timestamps to human-readable dates and convert any date back to a Unix epoch. Whether you're debugging API responses, analysing log files, working with database records, or checking when a JWT token expires, this tool gives you instant results in UTC, local time, ISO 8601, and relative format. A live Unix clock at the top shows the current epoch time in both seconds and milliseconds, ticking in real time. No page reload, no sign-up, and no data leaves your browser.

How to Use the Timestamp Converter

  1. The Live Clock at the top shows the current Unix time in seconds and milliseconds, updating every second.
  2. To convert a Unix timestamp to a date: enter the timestamp in the left panel, choose seconds or milliseconds from the dropdown, and click Convert.
  3. The result shows the date in UTC, your local timezone, ISO 8601 format, and a relative time (e.g., "3 years ago").
  4. To convert a date to Unix: use the date-time picker in the right panel, select local or UTC interpretation, and click Convert.
  5. Click the ⎘ copy button beside any result to copy it to the clipboard instantly.

Key Features

  • Live UTC clock — shows current Unix seconds, milliseconds, and UTC date/time ticking in real time.
  • Convert Unix → Date: supports both seconds and milliseconds input; shows UTC, local, ISO 8601, and relative time.
  • Convert Date → Unix: date-time picker with local or UTC mode; returns seconds, milliseconds, and hex.
  • Copy buttons on every result — click ⎘ to copy any value to the clipboard with one click.
  • Shows relative time — "3 days ago", "in 2 hours" — great for log analysis and expiry checks.
  • Hex output — shows the Unix timestamp in hexadecimal, useful for debugging packed binary formats.
  • Runs entirely in the browser — no server calls, works offline, completely private.
  • Completely free with no sign-up required.
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