Timestamp Converter
Supports seconds (10-digit) and milliseconds (13-digit) timestamps.
Enter a value above to convert.
Convert Unix timestamps to human-readable dates — or dates back to Unix timestamps — instantly. Supports epoch seconds, milliseconds, and ISO 8601 format output. Used by developers debugging APIs, logs, and database records. Free, no signup, works in your browser.
Three steps. No setup.
Drop your content into the field above, or type directly into it. The tool starts working the moment you do — no button to press.
Everything is calculated locally in your browser as you type. No waiting, no uploading, no server involved.
Hit Copy to grab the result, or Download if the tool offers a file. Close the tab — nothing is stored.
Free, private, and built to last.
Timestamp Converter is a free online tool that runs entirely in your browser. No data is sent to any server — your input stays private on your device and disappears the moment you close the tab.
It is designed to be fast, simple, and accessible to everyone — whether you are a developer, marketer, student, or business owner. No signup, no ads, no nonsense. Just the tool, ready when you need it.
Frequently Asked Questions
A Unix timestamp is the number of seconds that have elapsed since 1 January 1970 00:00:00 UTC, known as the Unix epoch. It is used by computers and APIs to represent a precise point in time as a single integer, making it easy to store and calculate time differences.
A seconds timestamp (e.g. 1715424000) measures elapsed seconds since the epoch. A milliseconds timestamp (e.g. 1715424000000) measures elapsed milliseconds — 1,000× larger. JavaScript's Date.now() returns milliseconds; most Unix systems use seconds.
Use new Date(timestamp * 1000) if your timestamp is in seconds, or new Date(timestamp) if it is already in milliseconds. Then call .toLocaleDateString() or .toISOString() to format it as a readable date.
Epoch time refers to the Unix epoch — the starting point for Unix timestamps: 1 January 1970 00:00:00 UTC. 'Epoch time' and 'Unix timestamp' are used interchangeably.
The date was chosen arbitrarily by the early Unix developers at Bell Labs. It was a recent, convenient date that had not yet passed when Unix was being developed in the late 1960s and early 1970s.
ISO 8601 is an international standard for representing dates and times (e.g. 2024-05-13T12:00:00Z). The 'Z' at the end means UTC. It is unambiguous, machine-readable, and sortable — making it the preferred format for APIs and databases.