Timestamp
Unix ↔ human dates
Timestamp: Unix ↔ human dates. A free, browser-based tool from DevToolbox that runs entirely on your own device: no upload, no account, no tracking.
About the Timestamp
Convert between Unix timestamps and human dates in both directions, and see every equivalent representation at once: ISO 8601, UTC, your local time, seconds and milliseconds.
The calculation is done with the same maths a browser or design tool uses internally, so the values match what you will see when you paste them into CSS, a terminal or an editor.
What you can do with it
- Timestamp converter
- Unix timestamp
- Epoch converter
- Date to timestamp
- Timestamp to date
How to use it
- Enter your value in the input.
- The equivalent forms are calculated immediately.
- Adjust any options to change the output format.
- Copy the value you want.
Questions
- Seconds or milliseconds?
- Ten digits is seconds, thirteen is milliseconds. That is how the input is interpreted. Unix time counts from 1 January 1970 UTC, so a value that lands decades away from now is usually the wrong unit.
- Which time zone is "local"?
- Whatever your browser reports, including the current daylight-saving offset. UTC is shown alongside it so you can always see the difference.
- Is my data uploaded anywhere?
- No. The tool is JavaScript that runs in the tab you already have open, and DevToolbox has no backend to send anything to. You can open the network tab and watch: after the page and its script load, nothing is sent while you work.
Related tools
The Timestamp sits in Utilities, one of the 90 tools on DevToolbox.