⌛ Unix Timestamp Converter

Convert between Unix epoch time and a human-readable date. Everything runs in your browser, in your local timezone (shown below) plus UTC.

Current time:

About this tool

Convert a Unix timestamp (seconds or milliseconds since 1 January 1970 UTC) into a human-readable date — and a date back into a timestamp. The converter detects whether you pasted seconds or milliseconds, shows both UTC and your local time, and displays the current timestamp live.

A daily helper for reading log files, database rows, JWT expiry claims and API responses.

How to use it

  1. Paste a timestamp to see the date in UTC and local time.
  2. Or pick a date and time to get the corresponding timestamp.
  3. Copy whichever format you need (seconds, milliseconds, ISO 8601).

Frequently asked questions

Seconds or milliseconds?

Unix time is officially in seconds (10 digits today). JavaScript and many APIs use milliseconds (13 digits). The tool detects the length and labels the result.

What happens in 2038?

Systems that store the timestamp as a signed 32-bit integer overflow on 19 January 2038. 64-bit systems — and this tool — are unaffected.

Is the conversion done locally?

Yes, in your browser with the built-in Date object.

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