Every review counts once
This calculator treats your rating as the average of all your star ratings. Each 5-star pulls it up a little. Each 1-star pulls it down.
Free tool
Google review calculator
How many 5-star reviews will it take to lift your Google rating? Put in your numbers and see.
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How the math works
Your rating is an average, and averages move slowly
Big counts move slowly
The more reviews you have, the more it takes to shift the average. That's why steady asking beats a one-off push.
A 1-star costs more than you think
At 4.5 stars, it takes seven 5-star reviews to undo a single 1-star. At 4.8, it takes nineteen.
Questions
Straight answers
It depends on your rating. With a simple average, at 4.0 stars it takes 3. At 4.5 it takes 7. At 4.8 it takes 19. The higher your rating, the more each bad review costs.
Yes. In our 2026 survey, only 17% said they need 4.5 stars or more. And a perfect 5.0 makes 83% suspicious when there are only a few reviews. More reviews beat a perfect score.
Treat it as an estimate. The calculator uses a simple average of star ratings, and Google shows your rating to one decimal. Google's own calculation may differ.
Ask every customer, right after the visit, with a direct link to your review page. In our 2026 survey, 92% said they'd leave a review if asked right after great service.
No. Google doesn't allow paid or rewarded reviews, and it removes fake ones. Ask every customer the same way instead.
How many reviews behind are you?
Your free Competitor Review Report lines your reviews up against the businesses near you and shows what to fix first.
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