Calculator: Predict How Your Online Reviews Will Impact Sales

Calculator: Predict How Your Online Reviews Are Impacting Sales

This calculator provides a predicted increase or decrease in sales based on the number of positive reviews, negative reviews, and resolved reviews that your company has online.

If you’re reading this via RSS or email, click through to the site to use the tool:

Calculate Your Predicted Sales Impacted By Online Reviews

For information on how the formula was developed, read below:

Formula for Predicted Increased Sales from Online Reviews

Trustpilot is a B2B online review platform for capturing and sharing public reviews of your customers online. Trustpilot has found that their clients’ testing shows an increase in conversion rates up to 60%. In fact, through analysis of over 2,000 clients, they’ve had a mathematician develop the actual formula for calculating the potential sales increase associated with positive reviews, negative reviews, and negative reviews that have been remedied.

Trustpilot wanted to investigate how reviews impacted sales, so they partnered with renowned Cambridge University mathematician, William Hartston, to develop a formula to calculate the economic impact of online reviews on UK businesses. The formula is as follows:



  • V = Percent increase in revenue to your business due to online reviews
  • P = The number of positive reviews
  • N = The number of negative reviews
  • R = The number of satisfactorily resolved negative reviews

Customer Loyalty and Reviews

Customer loyalty is an essential part of virtually every marketing plan, but without your end-users testimonials shared online so that prospects can research and connect directly with customers, your customer loyalty plan isn’t complete. Utilizing a platform to automate the collection, syndication, and promotion of customer reviews is essential for businesses selling online.

It’s time for brands to stop fearing online reviews and start understanding the power of honest customer feedback. Online reviews make customers feel appreciated and heard, and businesses see tangible, noticeable differences in ROI, revenue, customer retention, and click-through rates. If your business hasn’t done so yet, the time is now.

Jan Vels Jensen, CMO of Trustpilot

Online reviews boost traffic, sales, cart size, and reduces cart abandonment.

Download The Critical Role Of Reviews In Internet Trust


  1. 1

    The math here seems dodgy. The example in the video gives 120 positive, 20 negative, and 10 resolved negative reviews. If I put those numbers into the above formula I get 572.75 rather than 62.41% as shown in the video.

  2. 3

    OwO, very interesting post. Never thought there has a calculator that predicts Sales on Online Reviews. Thanks for Sharing. I calculate and my score is: 1620.53%. What’s your opinion on my sales score?

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