What a better rating is worth.
For businesses established in France.
An order of magnitude, not a promise. A Harvard Business School study of independent restaurants found that “a one-star increase in Yelp rating leads to a 5-9 percent increase in revenue”.
The limits of this study: it covers independent restaurants in Seattle, rated on Yelp between 2003 and 2009. It says nothing about Google, France or other trades: for them, it is an indication, not a measurement. Your result depends on your business, and we do not guarantee it.
Enter your customers per day, average spend, opening days and rating: your result appears here.
to
of turnover a year, according to the study.
Calculation: the gap between your rating and a reachable target (4.5, or your rating plus one star below 3.5), multiplied by 5 to 9% of your turnover. Read Michael Luca's study. Rating thresholds: BrightLocal, Local Consumer Review Survey 2026 (consumers in the United States).