Need to convert a Unix timestamp into a readable date or turn a date into a Unix timestamp? This tool makes it easy to convert between timestamps and dates, with results updating instantly as you type. View dates in both your local time zone and UTC, making it useful for debugging applications, working with API responses, analysing logs, or checking when an event occurred. Whether you're working with seconds or milliseconds, you can quickly translate timestamp values into a format that's easier to understand.

Simply enter a Unix timestamp or select a date and time to see the corresponding values. All conversions are calculated directly in your browser, with nothing sent to a server, keeping your input private and under your control.

How to use it

The timestamp converter works in both directions, between Unix time and a calendar date.

1. Enter a timestampType a Unix timestamp and choose whether it's in seconds or milliseconds.
2. Or pick a dateUse the date and time field instead, and the timestamp updates automatically.
3. Use nowClick 'Use now' to load the current time into the converter.
4. Read the resultsSee the local time, UTC time, ISO 8601 format and a relative description all at once.

Good to know

Nothing is uploaded

Conversion uses your device's own clock and time zone, entirely in your browser.

Seconds vs milliseconds

Unix time is traditionally in seconds, but JavaScript's own Date.now() and many APIs use milliseconds. Make sure you've picked the right unit.

The year 2038 problem

Systems that store Unix time in a signed 32-bit integer will overflow on 19 January 2038. Most modern systems use 64-bit values and aren't affected.

Frequently asked questions

What is a Unix timestamp?

It's the number of seconds (or sometimes milliseconds) that have passed since midnight UTC on 1 January 1970, known as the Unix epoch. It's a simple, time-zone-free way to represent a moment in time.

Why does my timestamp show the wrong date?

Check whether you're using seconds or milliseconds — a timestamp in the wrong unit will convert to a date either around 1970 or thousands of years in the future.

Can a Unix timestamp be negative?

Yes. A negative value represents a moment before the 1970 epoch.

Is my information sent anywhere?

No. The conversion happens entirely in your browser.

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