Percent Error Calculator



Zero ('0') Will never be accepted!
Zero ('0') Will never be accepted!




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Introduction to Percent Error Calculator

The percentage error calculator is an online tool that calculates the percentage of error between the observed and exact values of measurements. It uses a percentage error formula to find percent error. It used to calculate percent error in approximations. You can use it for numerical approximations as well as in science to report errors in observations.

When you are doing approximations using different gadgets, there are many chances of getting errors in observations. You always need a tool that can find percentage error to find the difference between exact and observed value. That’s why here we introduce a tool online that can easily find percentage error.

Related:You can also use sig fig calculator to round significant figures and salvage value calculator to calculate salvage value of any object.

Formula used by Online Percent Error Calculator

Percentage error is the difference between actual value and the observed value in comparison to the actual value. The following formula is used to calculate it,

$$ Percent \; Error \;=\; \frac{Observed \; value \;-\; Actual \; value} {Actual \; value} \;×\; 100 $$

The percentage error formula calculator uses this formula to calculate percentage error.

How do you calculate percentage error for observed value 20 and actual value 18?

Observed value=20
Actual value=18
You have to use percent error formula to calculate error so,

$$ Percent \; Error \;=\; \frac{20-18}{18} \;×\; 100 $$ $$ Percent \; Error \;=\; \frac{2}{18} \;×\; 100 $$ $$ Percent \; Error \;=\; 0.11×100 $$ $$ Percent \; Error \;=\; 11% $$

Calculatores offers you many other tools like limiting calculator to calculate rate of change of function, logarithm calculator to find log of any number and anti-log calculator to find antilog.

How to use the Percent Error Calculator with steps?

There are some simple steps to using this tool. These are:

  1. In the first step, you need to enter the observed value in the “True value” box. Or you can try the load examples option.
  2. Now enter the actual value in the “Observed value”.
  3. Click on the “Calculate” button.

As you click on the calculate button, you will find the results within a few seconds.

Why to use Percentage Error Calculator?

Since the percent error formula is used to measure the difference between experimental and theoretical values in percentage taken from an instrument. There is always a need to use a tool to compute it accurately.

In science, there are many theoretical ideas near the actual results. The percent error formula can be used to know the difference between the actual and expected results. It can only do it by using this error finder tool. That’s why you need to use this tool.

Benefits of using Percentage Error Formula Calculator

This error tool calculates the percentage of the difference between real and measured values. So, there are many benefits of using this tool. Some of them are:

  1. It gives you the actual error percentage of the measurements to fully trust it.
  2. It provides you with quick and accurate results because it is an efficient tool made to execute faster and correctly.
  3. When doing some experimental analysis with different tools like Vernier calipers or a screw gauge, you can use it.
  4. The percent calculator can be used in chemistry to measure the accuracy of the chemical experiment.
  5. It is a free online tool that allows you to perform many experimental measurements.
  6. It provides you with step-by-step results to easily understand the steps of the procedure.
  7. The percent formula calculator can be used in chemistry, statistics and other subjects to estimate the error in results.

You can also try our other tools such as remainder calculator and factorial calculator.


What is the use of the percentage error formula in real life?

You can use it to know the difference between the real results as compared to the expected results. You use it to find the percentage of your exam marks or it can be used in research to estimate the results.

How to calculate percentage error in chemistry?

In chemistry, you can use this formula to estimate how perfect your experimental results are or what is the percentage of error in the results. You can also use round-off calculator to round off any number.

Alan Walker

Shaun Murphy

Last Updated March 28, 2022

A professional content writer who likes to write on science, technology and education.