Free tool
Review Rating Calculator
Your Google rating is simple arithmetic — which means you can calculate exactly what it takes to move it. Enter your current review count and average to see how many five-star reviews reach your target, and why the road back from a low rating is longer than most owners expect.
The maths, honestly
Your displayed rating is the sum of all star ratings divided by the count. Moving it therefore gets harder the more reviews you have: a practice on 3.8 from 40 reviews needs 56 consecutive five-star reviews to display 4.5 — more than doubling its review count. This is why protecting a good rating is far cheaper than repairing a bad one, and why review collection needs to be systematic, not occasional.
Note that Google displays ratings rounded to one decimal place and may weight or filter reviews in ways it does not publish — the calculator shows the true arithmetic average, which is the number you can actually influence.
What moves the number in practice
Volume and recency beat perfection: a 4.7 from 300 recent reviews outsells a 5.0 from 9 old ones, because buyers read volume as evidence. Build the ask into the job — link sent by text at the moment of completion (our review link generator makes the one-tap link) — and reply to everything, especially the bad ones: your reply is read by every future customer.
Common questions
Should I try to get back to 5.0?
If you have any review below 5 stars, a displayed 5.0 is mathematically unreachable — the average can approach but never hit it. Chasing 4.8–4.9 with strong volume is the right target, and reads as more credible to buyers anyway.
Can I remove bad reviews?
Only Google removes reviews, and only for policy violations (fake, spam, conflict of interest, prohibited content) — being unfair or exaggerated is not enough. Flag genuine violations in your Business Profile dashboard, reply professionally to the rest, and outweigh them with volume.
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Want this done for you — with evidence?
The free tools show you what a machine can measure. The Website Revenue Audit adds what only a person can: your real customer journey, verified findings and a prioritised plan across up to ten pages.