Unix Timestamp Converter

About Unix Timestamp Converter

A three-panel Unix timestamp tool that covers the three most common timestamp tasks in a single interface. The live panel shows the current Unix timestamp in seconds and milliseconds, updating every second — useful as a quick reference when you need to know what "now" looks like as a timestamp without running Date.now() in a console. The timestamp-to-date panel accepts a raw Unix value and outputs the equivalent time in ISO 8601, UTC, your local timezone, and relative form ("3 hours ago"). Auto-detection handles both 10-digit (seconds) and 13-digit (milliseconds) input, which are frequently confused — JavaScript returns milliseconds while most Unix shell utilities and databases default to seconds. The date-to-timestamp panel works in reverse: pick or type a date and time and get the epoch value in both formats. A reference table of common timestamps is included — Unix epoch start (0), Y2K (January 1, 2000), the 2038 32-bit overflow boundary (2,147,483,647), and the current time — useful for sanity-checking whether a value makes sense before debugging further. All conversion is done in-browser with no server request.

How to Use Unix Timestamp Converter Online

1. Paste your data into the input field above
2. The result appears instantly in the output area
3. Click "Copy" to copy the result to your clipboard

Convert Unix timestamps to dates and dates to timestamps — live current time. Runs 100% client-side — no data is sent to any server.

Frequently Asked Questions