How do you calculate percent error?

Percent error = |measured − actual| / |actual| × 100. If you measured 9.80 and the true value is 9.81, the percent error is about 0.10%.

What's the difference between absolute and relative error?

Absolute error is the raw difference |measured − actual|. Relative error divides that by the true value; multiply by 100 for percent error.

Calculadora gratuita de erro percentual. Compare o valor medido com o valor real e obtenha o erro percentual absoluto.

Calcule o erro percentual entre um valor experimental e o valor real.

% error = \frac{∣ measured - actual ∣}{∣ actual ∣} \times 100