Website Tools

Unix Timestamp Converter

Instantly convert Unix timestamps to human-readable dates, and back, right in your browser.

Enter a Unix timestamp or a date below to instantly convert between them - entirely in your browser, nothing is sent to our servers.

Unix Timestamp

Date & Time (your browser's local timezone)

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What Is a Unix Timestamp?

A Unix timestamp counts the seconds since 1 January 1970 00:00:00 UTC. Databases, APIs and logs use it because it is time-zone independent. This tool converts timestamps to readable dates and back, in your browser.

When to Use It

To read a timestamp from a database, log or JWT.
To create a timestamp for a query or API call.

How to Use It

Paste a timestamp or pick a date.
Read the converted value in UTC and your local time.

Understanding the Result

10-digit values are seconds; 13-digit values are milliseconds (as used by JavaScript's Date.now()). The tool detects which one you entered.

Limitations

Local time is shown using your browser's time zone. Leap seconds are not counted, as in all Unix time.

Frequently Asked Questions

It's the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC (also called "the Unix epoch") - a common, timezone-independent way to store dates and times in code.

Yes - if you paste a timestamp with more than 10 digits, it's automatically treated as milliseconds instead of seconds.

No - this tool runs entirely in your browser using JavaScript. Nothing you enter is transmitted anywhere.