Percent error calculator


This Percent Error Online tools (% error calculator) will calculate the percentage error between an experimental measured value and a theoretical actual value.

Approximated/measured value:
Exact/actual value: 
Percent error:
Percent error non absolute:
Absolute error:


Percentage calculator ►

Percent error calculation

The absolute error is equal to the absolute value of the difference between the exact value and the approximated value:

ε = | Vexact - Vapprox |

The percent error is equal to the 100% times the absolute error divided by the exact value:

δ = 100% × | Vexact - Vapprox | / | Vexact |


Percentage calculator ►



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