utiloralab.
Developer tools / Free online tool

Unix Timestamp Converter

Convert Unix seconds or milliseconds to UTC dates, or turn an ISO date into a timestamp.

Runs in your browser
0 characters
OUTPUT
Your result will appear here

A little input. A useful output.

Your input stays on your device. No uploads. No account. Just your result.

How to use Unix Timestamp Converter

  1. 01

    Enter a timestamp or ISO 8601 date with timezone.

  2. 02

    Select seconds or milliseconds for numeric input.

  3. 03

    Read the UTC date and both timestamp units.

A quick example

Try a simple example

INPUT
1704067200
OUTPUT
ISO 8601: 2024-01-01T00:00:00.000Z
Unix seconds: 1704067200
Unix milliseconds: 1704067200000
UTC: Mon, 01 Jan 2024 00:00:00 GMT

About Unix Timestamp Converter

Unix time counts elapsed seconds since 1970-01-01T00:00:00Z. Millisecond timestamps use the same epoch with one thousand units per second.

When it comes in handy

  • Interpret log timestamps.
  • Prepare API date parameters.

Why use it here?

  • Runs locally in your browser.
  • No account needed; copy or download your result.

A few things to keep in mind

  • Numeric input defaults to seconds.
  • Use an explicit timezone in date strings to avoid local-time ambiguity.

Good questions. Simple answers.

Why is my result in the wrong year?

You may have supplied milliseconds while seconds were selected. Change the input unit and run it again.

Is my input uploaded?

No. This tool processes your input in your browser. Your input and output are not included in analytics.

A good next step

Useful tools that go well together.

Explore category