Marketing

Google Review Calculator

Calculate how many 5-star reviews you need to reach your target Google rating.

Enter your values

Results update as you type. Nothing is sent anywhere — the maths runs in your browser.

Your current Google star rating.

Total reviews you have now.

The star rating you want to reach.

Formula

Reviews Needed = (Target × (Current Reviews + X) − Current Rating × Current Reviews) ÷ (5 − Target)

Assumes all new reviews are 5 stars. In practice, you will need more because not every review will be perfect.

5-Star Reviews Needed
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Enter values to calculate.

Current rating
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Current reviews
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Projected rating
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Total after new reviews
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Frequently asked questions

How does Google calculate star ratings?

A simple average of all review scores, rounded to one decimal place for display.

Is 4.5 stars realistic?

Yes, but it requires consistent service quality and a review collection strategy. Most top businesses are in the 4.2-4.7 range.

Do negative reviews hurt more?

Yes. A 1-star review pulls the average down much more than a 5-star review pulls it up, especially with fewer total reviews.

How do I get more reviews?

Ask at the point of service, send follow-up emails, make it easy with direct review links, and respond to all existing reviews.