Enter the total number of 1,2,3,4 and 5-star ratings received to calculate your average star rating.

## Average Rating Formula

The following equation can be used to calculate the average star rating given the total number of ratings at each level.

AR = 1*a+2*b+3*c+4*d+5*e/5

• Where AR is the average rating
• a is the number of 1-star ratings
• b is the number of 2-star ratings
• c is the number of 3-star ratings
• d is the number of 4-star ratings
• e is the number of 5-star ratings

This average formula is similar to how a weighted average is calculated. Each value is worth a different amount. For example, 4, 5-star ratings are worth 20 points, and 3, 3-star ratings are worth 9 points. Take all of these values, add them up to a total, then divide by the number of possible ratings (5). This results in the average rating.

## Average Rating Definition

An average rating is a measure of what a given customer base or population on average rates a certain product or service.

## How to calculate an average rating?

How to calculate an average rating?

1. Gather all of the potential ratings.

Gather all of the ratings of 1 star up to 5 star rating.

2. Next, calculate the average rating.

Use the equation above to calculate the average rating.

## FAQ

What is an average rating?

An average rating is a measure of what a given customer base or population on average rates a certain product or service.