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Timestamp Converter

Convert Unix timestamps to dates

About Timestamp Converter

Timestamp Converter converts a Unix timestamp (in seconds) to a date and back, entirely in your browser — nothing is uploaded to a server. There's no timezone selector; dates always display in your browser's local timezone via toLocaleString(). It expects timestamps in seconds, not milliseconds — paste a 13-digit millisecond timestamp and it will be misinterpreted as a date thousands of years in the future.

How to use Timestamp Converter

  1. 1Click 'Use Current Time' to fill in the current Unix timestamp and date, or enter your own.
  2. 2To convert a timestamp to a date, type it into the Unix Timestamp field and click its 'Convert' button.
  3. 3To convert a date to a timestamp, set the Date and Time field and click its 'Convert' button.
  4. 4Read the resulting pair shown in the summary box below.

Frequently Asked Questions

What is a Unix timestamp?

The number of seconds elapsed since January 1, 1970, 00:00:00 UTC — a common way computers represent a point in time.

Can I select a specific timezone for the conversion?

No — there's no timezone dropdown. Dates are always shown in your browser's local timezone.

Does it support millisecond timestamps?

No — timestamps are interpreted as seconds. A 13-digit millisecond timestamp (common in JavaScript's Date.now()) will convert to an incorrect, far-future date unless you divide it by 1000 first.

Is my data uploaded to a server?

No, all conversion happens locally in your browser.

Tips & Tricks

  • ✓If you have a millisecond timestamp (13 digits), divide it by 1000 before pasting it in, since this tool expects seconds (10 digits).
  • ✓Results reflect your browser's local timezone, not UTC — account for that when comparing timestamps across locations.
  • ✓After converting a timestamp to a date, the date/time input field may not visually update correctly — rely on the summary box below for the accurate result.
  • ✓Use 'Use Current Time' as a quick way to get the current Unix timestamp for testing.