Google Review Calculator
This Google review calculator shows how many 5-star reviews it takes to reach the rating you want, and what your average would be without some of your 1-star reviews. Enter your current rating and review count from your Business Profile.
Star rating calculator
See how many 5-star reviews it takes to reach a target rating, and how much your 1-star reviews pull your average down.
This calculator needs JavaScript. You can do the math by hand with the formulas below.
New average = (rating × reviews + 5 × new 5-star reviews) ÷ (reviews + new 5-star reviews). Without 1-star reviews = (rating × reviews − number removed) ÷ (reviews − number removed). Ratings show to one decimal place, so 4.45 shows as 4.5.
This is arithmetic, not a forecast. Google shows a rounded average and may not count every review, so treat the result as an estimate. Whether a review comes down is always the platform's decision.
How to read the result
The Google reviews calculator above gives you two numbers.
- The first number is how many new 5-star reviews, with no other new reviews, would lift your average to the target.
- The second is your average if a set number of 1-star reviews were no longer counted.
- Both use the rating Google shows, which is rounded. Your exact average may be slightly higher or lower, so read the result as close, not exact.
Know how many you need? How to Get More Google Reviews From Real Customers covers how to ask for them.
To send the request, the Google Review Link Generator builds a direct link to your review box.
Why one 1-star review weighs so much
Each review is one vote in a simple average. When you have few reviews, each vote counts for a lot.
Take an example business with 20 reviews averaging 4.8. One new 1-star review drops the average to 4.6. Getting back to 4.8 takes 11 new 5-star reviews.
The same 1-star review on a profile with 200 reviews at 4.8 still shows 4.8. That's why small and newer businesses feel a single bad review the most.
How is Google rating calculated?
Google shows the average of the star ratings on your profile, rounded to one decimal. It may not count every review, for example ones it has filtered as spam, so your own math can differ slightly from what's displayed.
Replies, photos and review length don't change the number. Only the stars do, and they're all this Google review rating calculator uses.
When removal makes more sense than waiting
New 5-star reviews from real customers are always the long-term answer. To ask every customer without the daily work, see Review Management Service for Your Google Reviews.
But if a 1-star review breaks Google's rules, it shouldn't be counted at all.
If the calculator shows that a few reviews are holding your rating down, check whether they qualify. See Remove Negative Google Reviews for which ones Google takes down.
Costs are on Google Review Removal Cost, and you pay only if the review is removed.
Questions about the calculator
How many 5-star reviews do I need?
It depends on your current rating, your review count and your target. Enter all three above; the fewer reviews you have, the fewer you need.
Does the calculator save my numbers?
No. The math runs in your browser and nothing is sent anywhere.
Find out if those 1-star reviews can come down
Send the links, and we'll tell you which ones break Google's rules.