How many reviews to raise your rating?

Put in the average you have now, how many reviews it came from, and where you want it. The answer is division, and it is usually smaller than owners expect — or very much larger.

Frequently Asked Questions

Why does the number get so big near the top?

Because an average is pulled, not set. Each new review is one voice among all the others, so the closer you already are to the ceiling, the less room a new review has to move you. Going from 4.0 to 4.5 is ordinary arithmetic; going from 4.7 to 4.9 takes several times as many reviews, and going above the rating your new reviews average is impossible.

Should I be aiming for 5.0?

No. A flawless 5.0 reads as too good to be true, and shoppers are measurably more likely to buy from a business rated between 4.5 and 4.8 than from a perfect one. A perfect average also tends to mean very few reviews, which is the weaker signal of the two.

Does deleting bad reviews work?

You cannot delete a Google review you did not write. You can report one that breaks Google’s policies — fake, off-topic, or abusive — and it may come down, but an honest bad review will stay. Burying it under recent good ones is the only reliable route, and it is what this calculator measures.

Is filtering unhappy customers out a shortcut?

It is called review gating, the FTC prohibits it, and platforms remove businesses for it. Asking only the happy customers, or routing the unhappy ones to a private form instead of a review, is the version most tools quietly sell. Kudo does not do it. Ask everyone, at the right moment, and fix what the bad ones tell you.

Is anything I type here stored?

No. The arithmetic runs in your browser and the numbers never leave this page — there is no server behind the calculator to send them to. Like every page on this site we count the visit itself, so we know the page was opened; we never see what you typed into it.