67Leads › Free tools › Google rating calculator
How many 5-star reviews do you need to raise your rating?
Enter your current star rating, review count and target. Get the 5-star reviews it takes, what one bad review does, and how local competitors in your trade are rated. Free, no account.
23 five-star reviews
At 4.2 stars from 37 reviews you need 23 more five-star reviews in a row to reach a 4.5 average.
Google shows the rating rounded, so your true average could be 4.15 to 4.25; that makes the answer 19 to 26 reviews.
- One new 1-star review would move you from 4.2 to 4.12.
- One new 5-star review would move you to 4.22.
needed = ceil((4.5 - 4.2) x 37 / (5 - 4.5))
How this works
An average of R over N reviews is R x N stars in total. Adding k five-star reviews makes it (R x N + 5k) / (N + k). Setting that to the target T and solving gives k = (T - R) x N / (5 - T), rounded up. The same arithmetic with 1-star reviews says how much room you have before one bad week drops you below the line.
Compare with your competitors
Review score checkerGoogle review benchmarks by tradeGet your review link
Questions
With 37 reviews, 23 five-star reviews in a row. The formula is (target - current) x reviews / (5 - target), rounded up.
Only if every review is 5 stars. Once any review is lower, no number of 5-star reviews brings the average to exactly 5.0.
It depends on how many reviews you have: at 4.5 stars from 10 reviews one 1-star review takes you to 4.18; from 200 reviews, to 4.48.
Add your trade and city in the box above; the page shows the median rating and the share rated 4.5 or higher among the businesses 67Leads lists there.
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