MAPE Calculator

The MAPE calculator determines the mean absolute percentage error (MAPE) for a regression based on the actual and forecasted values.

How to Use the MAPE Calculator?

1. First, input the list of actual and forecasted values. The input format should be: 15,23,30 or 15 23 30.
2. The data points for both lists must be equal in length.
3. Press the 'Calculate' button.
4. Finally, the tool shows the mean absolute percentage error (MAPE) of a model.

How to Calculate MAPE?

The mean absolute percentage error (MAPE) is calculated using the following formula:

Where,
Σ = Symbol define 'sum',
A_i = Actual value of the i^th observation,
F_i = Forecasted (predicted) value of the i^th observation,
n = Number of observations or sample size.

Before evaluating forecast accuracy with MAPE, you may need to build a regression model. Our Sxy Calculator for Linear Regression helps calculate the covariance term used in determining the regression equation.