Star Rating Calculator
Calculate how many 5-star reviews you need to reach your target rating
Precise Math
See exactly how many reviews you need
Set Goals
Plan your path to a better rating
Track Progress
Understand how ratings change over time
Calculate Your Review Goal
Enter your current rating and see how many 5-star reviews you need to reach your target.
Why Your Star Rating Matters
Consumer Behavior
- • 94% of consumers avoid businesses below 4 stars
- • Each 1-star increase can boost revenue by 5-9%
- • 4.5+ stars leads to 28% more clicks in search
SEO Impact
- • Google uses ratings in local search ranking
- • Higher ratings = more visibility in Maps
- • Review quantity and recency also affect ranking
How to Calculate Your Average Star Rating
The average star rating formula is straightforward: multiply the number of reviews at each star level by that star value, sum them all, then divide by the total number of reviews.
For example, a business with 50 five-star, 20 four-star, 10 three-star, 5 two-star, and 15 one-star reviews has a total of (250 + 80 + 30 + 10 + 15) = 385 star points across 100 reviews, giving an average of 3.85 stars.
How Many 5-Star Reviews Do You Need to Raise Your Rating?
The number of new 5-star reviews needed depends on your current rating, your total review count, and your target. The more reviews you already have, the more new ones you need — each additional review has less impact on the average.
~5 reviews
To go from 4.0 → 4.5 with 20 existing reviews
~25 reviews
To go from 4.0 → 4.5 with 100 existing reviews
~125 reviews
To go from 4.0 → 4.5 with 500 existing reviews
Use the calculator above to get the exact number for your business. The key takeaway: it's easier to improve your rating when you have fewer reviews, so start collecting 5-star reviews as early as possible.
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