Unix Timestamp Converter — epoch to date, in your browser
Convert between Unix epoch timestamps and human-readable dates, instantly.
This tool runs entirely in your browser. Your files are never uploaded — they stay on your device.
Timestamp → date
Enter a timestamp to see the date.
Date → timestamp
Pick a date and time to get its timestamp.
A Unix timestamp counts the seconds (or milliseconds) since 1 January 1970 UTC — handy for logs and APIs, but hard to read at a glance. This converter turns any epoch value into a clear local and UTC date, and turns a date back into a timestamp.
Everything is calculated instantly in your browser using the built-in Intl date formatter. Nothing is sent anywhere, so you can paste timestamps from internal systems without a second thought.
How to use Timestamp Converter
- Watch the current Unix timestamp tick over in real time at the top.
- Paste a timestamp into the box — seconds and milliseconds are detected automatically.
- Read the matching local and UTC dates straight away.
- Or pick a date and time to get its exact Unix timestamp in seconds and milliseconds.
- Use the copy buttons to grab any value for your code or query.
Frequently asked questions
Is my data uploaded to a server?
No. All conversions happen locally in your browser with the standard JavaScript Date and Intl APIs. Nothing you type is ever sent anywhere.
How does it tell seconds from milliseconds?
It uses the length of the number. Values with 13 or more digits are treated as milliseconds; shorter values are treated as seconds. You can also switch the unit manually.
What is a Unix timestamp?
It is the number of seconds elapsed since the Unix epoch — 00:00:00 UTC on 1 January 1970. Many systems store it in milliseconds instead, which is 1000× larger.
Which time zone are the dates shown in?
Each timestamp is shown both in your device’s local time zone and in UTC, so you can read whichever you need.