๐Ÿ“ˆ Free calculator

Google Star Rating Calculator

Enter your current rating and review count to see exactly how many 5-star reviews it takes to reach your target.

30
more 5-star reviews to go from 4.2 to 4.5 stars.

How the math works

Your Google rating is the average of every review's star value. To move that average from where it is to a target, the number of new 5-star reviews needed is:

5-star reviews needed = review count ร— (target โˆ’ current) รท (5 โˆ’ target)

The higher your rating already is, the more each 5-star review costs you โ€” because you're closer to the ceiling of 5. That's why a high rating is only stable when it's backed by a steady stream of recent reviews. A 4.8 built on 500 reviews shrugs off a bad week; a 4.8 built on 25 wobbles every time one customer has an off day.

Make it easy for happy customers to leave a review

An NGTAPZ card sends people straight to your review page with one tap โ€” no searching, no typing.

See the cards โ†’