# MAPE Calculator

Free online MAPE Calculator – Calculate the mean absolute percentage error (MAPE) with our easy-to-use calculator. Enter your predicted and actual values, then click the calculate button.

Enter the number seperated by commas

 Mean absolute percentage Error (MAPE):

## Mean Absolute Percentage (MAPE) Formula

The formula for root mean absolute percentage error (MAPE) is as follows:

MAPE = (1/n) * Σ(Ai – Pi) / Ai * 100
where:

• MAPE = mean square percentage error
Σ = summation operator
Pi = predicted value for the ith observation
Ai = observed value(Actual Value) for the ith observation
n = number of observations

## How to Calculate MAPE?

To calculate the Mean Absolute Percentage Error (MAPE), follow these steps:

Step 1: Gather data
Collect the actual values (Ai) and the corresponding forecasted or predicted values (Pi ) for a set of observations.

Step 2: Compute absolute percentage errors
For each observation, calculate the absolute percentage error using the formula

Absolute Percentage Error = (Ai – Pi) / Ai

Step 3: Calculate MAPE
To find the Mean Absolute Percentage Error, take the average of all the absolute percentage errors:

Step 4: Convert to percentage
The MAPE value is expressed as a percentage, indicating the average absolute percentage error across all observations.

## What is mean absolute percentage error (MAPE)

Mean Absolute Percentage Error (MAPE) is a metric used to evaluate the accuracy of a prediction method. It measures the percentage difference between the predicted values and the actual values.