Percentage Error

What is Percentage Error?

Percentage error is a measure of how inaccurate a measurement is, compared to the true value. It is expressed as a percentage and is used to understand the precision and accuracy of an experimental or measured value. The lower the percentage error, the more accurate the measurement.

Formula for Percentage Error:

The formula to calculate percentage error is:

Where:

• Measured Value is the value obtained from an experiment or measurement.
• Actual Value is the true or accepted value.

Example:

Suppose you measure the length of a table and get 2.1 meters, but the actual length is 2.0 meters. The percentage error is calculated as:

Definitions by Mathematicians:

• According to John Taylor, “Percentage error quantifies the deviation of the experimental value from the true value and provides a measure of the precision of the measurement.”
• R.A. Fisher described it as “an essential indicator of the reliability of an experimental result, helping to compare the measured value with the known true value.”

About Percentage Error Calculator

What is a Percentage Error Calculator?

A Percentage Error Calculator is a tool designed to automatically compute the percentage error based on the actual and measured values you input. This calculator simplifies the process, providing quick and accurate results without manual calculations.

How to Calculate in Percentage Error Calculator?

Using the Percentage Error Calculator is straightforward:

1. Enter the Actual Value: Input the true or accepted value of the measurement.
2. Enter the Measured Value: Input the value obtained from your experiment or measurement.
3. Click Calculate: Press the “Calculate” button to compute the percentage error.

The calculator will instantly display the percentage error, helping you to understand the accuracy of your measurement.