⏱️ Timestamp → Date
📅 Date → Timestamp
What is a Unix timestamp?
A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970. It’s how databases, log files, APIs and programming languages store a moment in time as a single number. This converter turns a timestamp into a readable date — in both your local time and UTC — and turns any date back into a timestamp, all in your browser.
Frequently Asked Questions
Seconds or milliseconds?
Classic Unix time is in seconds (10 digits today, e.g. 1753081620). JavaScript and many APIs use milliseconds (13 digits). Leave the selector on Auto and the tool detects which one you pasted, or force it manually.
Why do local time and UTC differ?
A timestamp is a single instant; how it reads as a clock time depends on the timezone. The tool shows both your device’s local time and UTC so you can match whatever your server or database uses.
What’s the year-2038 problem?
Systems that store Unix time in a signed 32-bit integer overflow on 19 January 2038. Modern 64-bit systems are unaffected — but it’s why you’ll still see it mentioned in older database and C code.
Is my data private?
Yes. Every conversion runs entirely in your browser with JavaScript — nothing is sent to a server or stored.
