Unix Timestamp Converter
See the current Unix timestamp live, and convert freely between epoch time and a human-readable date — right in your browser.
Timestamp → Date
Date → Timestamp
Everything above runs in your browser using simple date math — nothing is uploaded or sent anywhere, and no internet connection is needed once this page has loaded.
What Is a Unix Timestamp?
A Unix timestamp — also called epoch time or POSIX time — is the number of seconds that have elapsed since midnight on January 1, 1970, UTC, not counting leap seconds. Instead of writing a date like "September 3, 2026, 4:48 PM," a computer can store that same moment as a single number, such as 1788372300.
The appeal is simplicity: a Unix timestamp is timezone-independent and easy to do math with — comparing two points in time, or measuring how long passed between them, is just subtraction. That's why it shows up everywhere under the hood: databases, APIs, server logs, programming languages, and file metadata all commonly store time this way, even though it's rarely shown directly to an end user.
Seconds vs. Milliseconds
Most systems use whole seconds, giving a 10-digit number for dates in the current era. Some — JavaScript's own Date.now() included — use milliseconds instead, giving a 13-digit number. This tool auto-detects which one you've pasted in based on its length, though you can force either interpretation with the Seconds / Milliseconds toggle if you already know which format you have.
Related Tool
Looking to stamp a visible date onto a photo instead of converting a raw number? Try the image timestamp tool — it adds a readable date and time directly onto your images.
Unix Timestamp Converter FAQ
A Unix timestamp (also called epoch time) is the number of seconds that have passed since midnight on January 1, 1970, UTC. It's a simple, timezone-independent way for computers to represent a point in time as a single number.
This page shows the current Unix timestamp live at the top, updated every second, in both seconds and milliseconds.
Enter the timestamp into the "Timestamp → Date" box. The tool auto-detects whether it's in seconds or milliseconds, and shows the equivalent local time, UTC time, ISO 8601 format, day of week, and how long ago (or from now) that is.
Use the "Date → Timestamp" box: pick a date and time, choose whether it's in your local timezone or UTC, and the tool shows the matching Unix timestamp in both seconds and milliseconds.
No. Unix time treats every day as exactly 86,400 seconds and ignores leap seconds, which is standard behavior across virtually all computer systems.
No. Every conversion happens locally in your browser using simple date math — nothing is sent to a server, and no internet connection is needed once the page has loaded.