Unix Timestamp Converter

Translate Unix timestamps into human-readable dates and back, with both local and UTC views.

Mode

Units

Seconds Milliseconds

Timestamp:

Results

ISO (local):

ISO (UTC):

Readable (local):

Relative:

Enter a date and time

Date: Time:

Results

Seconds:

Milliseconds:

How to convert a Unix timestamp

Choose a mode: Timestamp to Date or Date to Timestamp.
In timestamp mode, enter a value and pick seconds or milliseconds, or hit Now for the current time.
In date mode, pick a date and time and convert it to epoch values.
Copy the ISO or epoch result you need.

FAQs

What is a Unix timestamp?

It is the number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC, ignoring leap seconds.

Seconds or milliseconds, which one?

Most APIs use seconds (10 digits). JavaScript's Date.now() uses milliseconds (13 digits). If unsure, try both and check the resulting year.

Why do local and UTC differ?

The instant in time is identical; local time simply displays it in your timezone offset. UTC is the same instant without any offset.

Is the converter free?

Yes. Every Handio tool is free and runs entirely in your browser, with no sign-up and no data uploads.

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Why convert Unix timestamps?

APIs and databases store times as Unix timestamps, which are meaningless at a glance. Converting them to readable dates makes logs, payloads and expiry values easy to interpret.

Convert an API timestamp to a readable date for debugging or QA.
Check when a token, cookie or cache entry actually expires.
Generate a current timestamp to test a date field in your app.

Tips and Limits

Timestamps can be seconds (10 digits) or milliseconds (13 digits) — check the year the result shows to confirm which unit you have. Conversion runs entirely in your browser.