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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:

MAPE =  
1
n
 Σ |
Ai - Fi
Ai
 |  × 100

Where,
Σ = Symbol define 'sum',
Ai = Actual value of the ith observation,
Fi = Forecasted (predicted) value of the ith observation,
n = Number of observations or sample size.

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