Marketing Budget Calculator Marketing Budget CalculatorHow much is the average price of your solutions (products or services)? How many customers do you want a month? How many percent of the sale are you willing to invest to acquire the customer? On average, how many percent of leads turn into paying customers? Monthly Marketing Budget ($) Number of Leads you'll need in a month You shouldn't spend more than this to get a lead. ($) If you convert every 3 out of 100 site visitors into leads, this is the number of site visits you need every month. And this is how much you should invest to get ONE site visitor. ($)