GlenCalc

Percent error calculator

Percent error tells you how far a measurement is from the accepted value, as a share of the accepted value.

Your answer

Percent error2.1407 %
Absolute error0.21
Signed error (measured − true)-0.21

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How we worked it out

Updated as you change the numbers.

  1. Percent error = |measured − true| ÷ |true| × 100 = |9.6 − 9.81| ÷ 9.81 × 100.

Method and assumptions

Percent error = |measured − true| ÷ |true| × 100. The sign of the error (over or under) is shown separately.

Questions

What is the percent error of measuring g as 9.6 m/s² when it is 9.81?

About 2.14%.

Sources

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