Google review calculator

Your rating comes from the star ratings customers leave on your Business Profile. The simplest way to model it, and the one this calculator uses, is a plain average: add up every star and divide by the number of reviews. Google doesn’t publish its exact method, so treat the answer as a close estimate rather than a promise.

Google shows your rating with one decimal place, like 4.6. Your true average sits close to that number, a little above or below it, and Google doesn’t spell out how it rounds. That’s why your rating can move a review or two sooner or later than the calculator says.

There’s no magic number. What changes with more reviews is how steady your rating is: with 20 reviews, a handful of new ones moves it a lot; with 500, it barely moves. Customers also tend to notice how many reviews you have and how recent they are, not only the stars, so a steady trickle of new reviews is worth more than a one-off push.

Google doesn’t say whether recent reviews carry more weight in the rating it shows, so we won’t claim they do. This calculator counts every review equally. Recent reviews do matter to the people reading them, though: a profile with reviews from last week looks more active than one whose newest review is a year old.

A 5.0 average means every single review is 5 stars. Once any review is lower, new 5-star reviews pull your average closer and closer to 5.0 without ever reaching it exactly. A high 4 with plenty of reviews also reads as more believable to most customers than a perfect score.

It depends where you start. Any review below your current average pulls it down a little, and any review above it pulls it up. At 4.3, a 4-star review nudges your average down slightly; at 3.8, the same review lifts it.

Only if a review breaks Google’s content policies, for example spam, fake reviews, conflicts of interest, off-topic rants or hateful content. You can report it from your Business Profile and Google decides whether it comes down. An honest account of a bad experience will stay, even if you disagree with it. For those, a calm public reply is your best answer.

Ask every customer, not only the ones you expect to be happy, right after the job is done. Make it easy with your Business Profile’s review link or QR code on receipts, emails or a counter card. Two things Google prohibits: review gating (only asking people you expect to be happy, or screening customers before sending them to Google) and incentives (discounts, freebies or payment for a review, even an honest one).

Replying won’t change your star rating. It does change what people see under it: replies are public, so anyone deciding whether to visit can read how you handle praise and complaints. Responding to reviews is also one of the steps in Google’s own tips for improving a Business Profile’s local ranking.

It’s free, with no sign-up. The maths runs in your browser, so the numbers you type aren’t sent to us or saved anywhere.