How the review rating calculation works
The tool estimates the number of additional 5-star reviews needed to reach your target underlying average: (target − current average) × current count ÷ (5 − target), rounded up. For example, 100 reviews at 4.2 need approximately 60 additional 5-star reviews to reach 4.5.
Google displays rounded averages, so your actual underlying rating may be a little higher or lower than the value you enter. Mixed ratings change the result. This is planning math, not a promise about Google’s display or a reason to solicit only positive feedback.
Build a fair invitation process with our guide to asking for reviews, then use the Google review link generator to make responding easier.
Questions
Can I reach exactly 5.0?
Not from a lower underlying average by adding a finite number of 5-star reviews. A rounded displayed score is different from an exact average.
Should I ask for 5-star reviews?
Ask for honest feedback from every eligible customer. Do not request a particular rating, screen customers by satisfaction or offer an incentive.
Want a managed review routine instead? Explore plans and pricing or how Ask & Get Reviews works.