Google review calculator
Enter your current Google rating, how many reviews you have and the rating you want. The calculator shows exactly how many 5-star reviews it takes to get there. Free, instant, no signup.
YOUR NUMBERS
54 more 5-star reviews
That takes you from 4.3 with 40 reviews to 4.70 with 94.
Make asking easy: get your direct review link and QR code.
Email me this plan
Optional. Your numbers and a simple weekly plan, in your inbox.
How it works
Enter your numbers
Type your current star rating and review count as Google shows them on your profile, then the target rating you want to reach.
See how many reviews you need
The answer appears as you type. It assumes every new review is 5 stars, so treat it as the minimum you need.
Get your plan by email (optional)
Want to keep it? Enter your email and we send the numbers with a simple weekly plan and a link to your review link and QR code.
How the math works
The formula
To go from rating R with N reviews to target T, you need N × (T − R) ÷ (5 − T) new 5-star reviews, rounded up. For example, 4.2 stars from 50 reviews needs 30 more 5-star reviews to reach 4.5.
Why 5.0 is out of reach
Once you have a single review under 5 stars, a true 5.0 average is mathematically impossible. Google rounds to one decimal, though, so an average of 4.95 or higher shows as 5.0. The calculator shows what that takes.
Higher targets cost more
Each tenth of a star gets more expensive the closer you get to 5.0, because every new review moves the average less. That's why a steady flow of reviews beats a one-time push.
Your rating is rounded
Google shows your average rounded to one decimal, so the rating you see can be off by up to 0.05. The answer can be off by a review or two either way.
STRAIGHT ANSWERS
Questions about the tool.
It depends on where you start. Use the formula N × (4.5 − R) ÷ 0.5. From 4.2 stars with 50 reviews, that's 30 more 5-star reviews. Enter your own numbers above for the exact answer.
Not a true 5.0 average, but Google rounds to one decimal, so 4.95 and above displays as 5.0. The calculator shows how many 5-star reviews that takes.
The star average is a plain average. Recency still matters to customers and to Google's ranking, which is why steady new reviews help more than old ones.
Only reviews that break Google's policies (spam, fake, offensive) can be flagged for removal. For honest bad reviews, reply calmly and focus on getting more good ones.
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