How Does Google's Rating Actually Work?
How Google’s star rating is actually calculated
Google’s own help documentation is direct about this: “the review score is the average of all ratings published on Google for that place or business.” That’s a plain arithmetic mean — add up every star rating and divide by the count — with no Bayesian adjustment or new-business dilution like some platforms use.
How Google’s star rating is actually calculated
The visible number lags reality on two fronts. First, individual reviews are checked against Google’s content policies before they appear, which “might take a few days.” Second, even once a review is live, Google’s own guidance says “it may take up to 2 weeks to get an updated review score” after that. A business can post a genuine new review and not see its average move for days or weeks — that’s normal, not a sign something is broken.
Only reviews that survive Google’s policy check count toward the average at all. Fake, incentivized, off-topic, or otherwise prohibited reviews that Google removes don’t factor in — which cuts both ways: a business can’t buy or fake its way to a higher score, but it also isn’t stuck living with reviews that never should have qualified in the first place.
What actually moves a Google rating
- Simple average — the displayed score is the sum of all published star ratings divided by the number of ratings, with no weighting scheme Google discloses.
- Processing delay — a new review can take a few days to appear at all while Google checks it against policy.
- Update lag — once live, a review can take up to two weeks to be reflected in the visible score.
- Policy compliance filter — fake, incentivized, off-topic, or otherwise prohibited reviews don’t count toward the average, whether they were ever published or later removed.
Frequently asked questions
Yes. Google review packages start at $110 for up to 5 reviews, scaling to $690 for 50, with monthly billing at 15% off. Pick a package on this page, or try a free example first.
A steady flow of genuine reviews collected through your Google-generated review link or QR code, professional public responses to every review, and flagging any reviews that genuinely violate Google’s content policies. Because the score is a simple average that can lag a new review by up to two weeks, consistency matters more than any single push.