4.2 stars seems to be the magic number for higher conversion. If you have anything lower, it is time to ask for help with google reviews. 49% of consumers need at least a four-star rating before using a business. Less than 50% of consumers will frequent a business with a rating under 4 stars. 87% of consumers would not even consider a business with an average rating below 3 stars. Worse still, reviews that only gave 1 or 2 stars failed to convert 86% of prospective customers.