Developer Tools

Unix Timestamp Converter

Convert Unix epoch timestamps to readable dates, or convert a date and time to a Unix timestamp. Supports both seconds and milliseconds, and shows local time, UTC, ISO 8601, and relative time in a single view.

Converts seconds and milliseconds Shows local, UTC, ISO 8601 and relative Browser-only

Timestamp → Human date

Paste a Unix timestamp in seconds or milliseconds

Local time—
UTC—
ISO 8601—
Relative—

Date → Unix timestamp

Pick a date and time to convert

Seconds —
Milliseconds —

How to use it

  1. 1 Paste a Unix timestamp into the top field, or click 'Now' to use the current time.
  2. 2 The local time, UTC, ISO 8601, and relative time display automatically.
  3. 3 Use the bottom section to pick a date and time from the date picker to get its Unix timestamp.
  4. 4 Click Copy next to the seconds or milliseconds value.

Use cases

  • Debugging API responses that include epoch timestamps
  • Converting log timestamps to readable dates
  • Finding the Unix timestamp for a specific date in the past or future

Limitations

  • Timestamps before 1 January 1970 (negative values) are not supported.
  • Very far-future dates may not display correctly depending on browser support.

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FAQ

Does the tool handle milliseconds?

Yes. Timestamps longer than 11 digits are treated as milliseconds. Standard 10-digit timestamps are treated as seconds.

What timezone is used for 'local time'?

The timezone of your browser and operating system. UTC is always shown separately for reference.