Percent  Error Calculator, Formula and Examples

Percent  Error Calculator :

Enter the percent error calculator computes the percentage error between an observed value and the true value of a measurement, and you get the calculator check it.

Percent Error Calculator

Percent Error Formula :

The percentage error formula is the absolute value of the difference between the measured value and the actual value divided by the actual value and multiplied by 100.Hence the formula for percent Error can  be written as,

Percentage Error =(Approximate Value – Exact Value)/Exact value ) ×100

Sample Problems :

Example 1 :

Calculate the percentage error if the actual measurement of the value is 14 cm? In a scale measures wrongly a value as 5 cm due to some marginal errors.

Solution :

Given,

Approximate value =5cm

Exact value =14cm

Percentage Error =(Approximate Value – Exact Value)/Exact value ) ×100

Percentage Error =(5-14)14×100

=-64.2%

Example 2 :

Calculate the percentage error if the actual measurement of the value is 25 cm? In a scale measures wrongly a value as 50 cm due to some marginal errors.

Solution :

Given,

Approximate value =50cm

Exact value =25cm

Percentage Error =(Approximate Value – Exact Value)/Exact value ) ×100

Percentage Error =(50-25)25×100

=4900%

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