Percent Error Calculator

Percentage Error Calculator

This calculator is used to determine the error in percentages between the approximated or measured value and the exact or actual value. It also gives the absolute error and the non-absolute percent error. It has two text fields where you enter the values that have to be calculated or converted. The calculator also has two controls which execute different actions in seconds. The ‘Calculate’ button is used to execute the conversions once all the text fields have been filled with appropriate values. The ‘Reset’ button is used to erase all data of the previous calculations in a single click setting the calculator ready for performing new conversions.

The first step is to enter the approximated value. It is the value that is calculated based on the basic knowledge or an estimate. Afterwards, you can enter the exact value in the second text field. It is the actual value of the measurement according to what can be seen or visualized. Click the ‘Calculate’ button to perform the conversion. The result of the percentage error will be displayed in the platforms below the two controls.

For example;

If the approximated value of a yield is $35,000 and the actual value is $20,000, what is the percentage error?

Solution

You will first enter $35,000 in the first text field and $20,000 in the second text field respectively and then click the ‘Calculate’ button.

The result of the calculation will be displayed as;

Percent error = 75%

Percent error non absolute = 75%

Absolute error = 15,000

The absolute error is the difference between the actual value and the approximated value. According to the results, it differs by a value of $15,000.

Formula of calculating the percentage error

Є = \ V exact – V approx.\, which means that the absolute error is calculated by the difference between the approximated value and the exact value.

δ = 100% x \ V exact – V approx.\ / \V exact\, which means that the percentage error is computed by multiplying 100% by the absolute error and the result is divided by the actual value.