About

Percent error

Compare an experimental value with an accepted reference value.

Input

Runs on your device

Result

Your result will appear here

How to use percent error

Set Measured value, Reference value. Select Calculate, then review the result. Use the download or copy controls to keep it. Reset restores the starting settings and clears the result.

Your files stay here

Inputs are processed in your browser and are not uploaded to an Everytool server. Results last until you reset or leave this page. Favorites and recently used tool names are saved only in this browser.