Unix timestamp converter
Convert Unix timestamps to human dates and back. Auto-detects seconds vs milliseconds; shows UTC and local time.
About this timestamp converter
Convert a Unix timestamp to a human-readable date in both UTC and your local time, or turn any date string into a timestamp. It auto-detects whether your number is in seconds or milliseconds.
Why timestamps
Unix time is a single integer that is timezone-independent and easy to compare or store, which is why logs, databases and APIs use it everywhere. This tool bridges that machine format and the human dates you actually read.
FAQ
Seconds or milliseconds?
Classic Unix time is in seconds, while JavaScript uses milliseconds. The tool treats numbers with 13 or more digits as milliseconds automatically.
What is the Unix epoch?
It is the reference point Unix time counts from — midnight UTC on 1 January 1970, which is timestamp zero.