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How to Convert Unix Timestamps
The Unix Timestamp Converter translates between epoch seconds (or milliseconds) and human-readable dates — in your local timezone and UTC.
- Enter a Unix timestamp to see the corresponding date, or pick a date to get the timestamp.
- Toggle between seconds and milliseconds precision.
- View the result in both your local timezone and UTC.
What Is a Unix Timestamp?
A Unix timestamp (epoch time) counts the number of seconds since January 1, 1970 00:00:00 UTC. It is the universal time representation in programming — used in databases, APIs, log files, and system clocks. JavaScript uses milliseconds (multiply by 1000). Negative timestamps represent dates before 1970.
Why Use Our Timestamp Converter?
- Bidirectional — timestamp to date and date to timestamp.
- Millisecond support — handles both seconds and milliseconds.
- Timezone aware — shows both local time and UTC.
- Live clock — see the current timestamp updating in real time.
Frequently Asked Questions
What is epoch time?
Epoch time (Unix time) is the number of seconds since January 1, 1970 00:00:00 UTC. It is a universal way to represent a point in time, independent of time zones.
Why does JavaScript use milliseconds?
JavaScript's Date object uses milliseconds since epoch for higher precision. To convert a Unix timestamp (seconds) to JavaScript, multiply by 1000.
What happens in 2038?
The 'Year 2038 problem' affects systems storing timestamps as signed 32-bit integers, which overflow on January 19, 2038. Modern systems use 64-bit timestamps, which are safe for billions of years.
Is my data private?
Yes. Conversion happens entirely in your browser.