Website ROI Calculator Expected monthly website visitors* In a given month, roughly how many people visit your website? Average monthly website leads* How many people complete any action on your website? For example, subscribing to a newsletter. Average number of customers per month* How many of those leads end up buying something from you? What's your average sale value? (£)* The average amount your customers pay you. Calculate my website ROI Enter your details to get your results:* Get your ROI results