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.

Your current star rating

Number of reviews you have

Rating you want to achieve

Current

4.2

Target

4.5

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
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Frequently Asked Questions

How is the average star rating calculated?

The average star rating is calculated by summing all star values and dividing by the total number of reviews. For example, if you have 10 five-star reviews and 2 one-star reviews, your total stars = (10×5) + (2×1) = 52, divided by 12 reviews = 4.33 average.

Why does it take so many reviews to improve my rating?

The more reviews you have, the harder it is to move your average. This is because each new review has less impact on the overall average. A business with 100 reviews needs many more 5-star reviews to move 0.1 points than a business with 10 reviews. It's called 'regression to the mean.'

What is a good target rating?

Most consumers consider 4.0+ stars acceptable, with 4.5+ being excellent. Studies show that going from 3.5 to 4.0 stars can increase revenue by 5-9%. However, a perfect 5.0 can seem suspicious - 4.7-4.9 is often perceived as more authentic.

Can negative reviews ever be removed?

Google only removes reviews that violate their policies (spam, fake reviews, off-topic content, conflicts of interest). Legitimate negative reviews, even unfair ones, typically cannot be removed. The best strategy is to respond professionally and generate more positive reviews.

How often does Google update my star rating?

Google typically updates your displayed rating within a few hours to a few days after new reviews are posted. However, during high-volume periods or for new businesses, it may take longer. The rating shown is Google's calculated average, not a real-time figure.

Is it against Google policy to ask for 5-star reviews?

You can ask customers to leave reviews, but you cannot: (1) offer incentives for reviews, (2) selectively ask only satisfied customers (review gating), or (3) tell them what rating to give. Simply asking 'Please leave us a review' after a positive interaction is acceptable.