Does the converter handle both seconds and milliseconds?

Yes. It auto-detects the unit by digit count: a 10-digit value is read as Unix seconds and a 13-digit value as milliseconds. You do not need to multiply or divide by 1000 yourself.

What date formats can I paste in Date to Timestamp mode?

Use a standard date like 2026-06-14 or a fuller date-time string such as 2026-06-14T09:30:00. The tool parses it and returns the matching Unix value in both seconds and milliseconds.

What is a Unix timestamp?

It is the number of seconds (or milliseconds) since January 1, 1970 at 00:00 UTC, also called epoch time. Computers use it to store dates as a single number, which this tool converts to a human-readable date.

Why does the local time differ from the UTC result?

UTC is the universal reference time, while the Local line uses your own device time zone. The gap between them is simply your time zone offset from UTC, which is normal and expected.

Unix Timestamp Converter

Mode

Value

Enter a value.

What the Unix Timestamp Converter does

This tool turns a Unix epoch timestamp into a readable date, or turns a date back into its epoch value. It is handy when you are reading logs, debugging an API response, checking a database created_at field, or setting an expiry in code. Developers, QA testers, and anyone who runs into a raw number like 1700000000 will get a plain answer in a click.

It also handles both seconds and milliseconds automatically. Paste a 10-digit value and it reads seconds; paste a 13-digit value and it reads milliseconds, so you do not have to multiply or divide by 1000 yourself.

How to use it

Pick a Mode from the dropdown: Timestamp to Date or Date to Timestamp.
Type or paste your value into the Value field. For timestamps use a number like 1700000000; for dates use a format like 2026-06-14 or a full date-time string.
Click Convert.
Read the results. Timestamp to Date shows the UTC time, your Local time, and the ISO 8601 string. Date to Timestamp shows Unix seconds and Unix milliseconds.

Why convert here

It is instant and runs entirely in your browser, so nothing you paste is sent anywhere. No sign-up, no ads in your way, no limits on how many values you check. Because the conversion happens on your own machine, the Local result reflects your computer’s time zone, which is useful for sanity-checking a log against your wall clock.

A couple of tips: if a number looks wrong, count the digits, since 10 digits means seconds and 13 means milliseconds. And remember that epoch time is always counted from January 1, 1970 UTC, which is why the UTC and Local lines can differ by your time zone offset.

This converter is meant for everyday development and quick checks rather than legal or financial record-keeping, so treat its output as informational.

Frequently asked questions

Does the converter handle both seconds and milliseconds?: Yes. It auto-detects the unit by digit count: a 10-digit value is read as Unix seconds and a 13-digit value as milliseconds. You do not need to multiply or divide by 1000 yourself.
What date formats can I paste in Date to Timestamp mode?: Use a standard date like 2026-06-14 or a fuller date-time string such as 2026-06-14T09:30:00. The tool parses it and returns the matching Unix value in both seconds and milliseconds.
What is a Unix timestamp?: It is the number of seconds (or milliseconds) since January 1, 1970 at 00:00 UTC, also called epoch time. Computers use it to store dates as a single number, which this tool converts to a human-readable date.
Why does the local time differ from the UTC result?: UTC is the universal reference time, while the Local line uses your own device time zone. The gap between them is simply your time zone offset from UTC, which is normal and expected.

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Last updated: June 15, 2026