How the Google review calculator works
Google shows customers a rounded version of your average star rating. This calculator estimates the fewest new 5-star reviews needed to move the rating you entered to your target. It assumes every new review is five stars; a lower rating will change the result.
Say your business has 100 reviews and a 4.2 rating. Reaching a 4.5 average would take an estimated 60 new 5-star reviews: (4.2 × 100 + 5 × 60) ÷ 160 = 4.5. Google may round the score shown on your profile, so use the result as a planning number, not a guarantee.
Your reputation never clocks out. Now you can.
ReviewRobot tracks your rating goal, makes it easy for customers to leave a review, and drafts a thoughtful response when they do. You approve every reply before it goes live.
Google review calculator questions
How many 5-star reviews do I need to increase my rating?
Enter your current rating, review count, and target above. The calculator gives you the smallest whole number of new 5-star reviews needed to reach that average.
Can a Google rating reach exactly 5.0?
If your current average is below 5.0, new 5-star reviews can move you closer, but they cannot produce an exact 5.0 mathematical average.
Why does my Google rating not change after a new review?
One review may not move the displayed rating when you already have many reviews. Google may also round the average shown on your profile.
Does Google round business ratings?
Google does not show the full underlying average. Because the calculator uses the rating you enter, its result is an estimate.