This free percent error calculator computes the percentage error between an observed value and the true value of a measurement. Explore various other math calculators ...

The word percentage comes from the word percent. If you split the word percent into its root words, you see “per” and “cent.” Cent is an old European word with French, Latin, and Italian origins meaning “hundred”. So, percent is translated dir

Example: Sam does an experiment to find how long it takes an apple to drop 2 meters. The theoretical value (using physics formulas) is 0.64 seconds.. But Sam measures 0.62 seconds, which is an approximate value.