How To Calculate Margin It is an advanced calculation tool, where you can calculate your profit margin. In this calculator just enter numbers in any two inputs and the rest we will take care of it. And the result will be itself in those specific inputs which we are given. For calculating Profit Margin enter Cost And Revenue. You can calculate (Cost, Revenue, Margin, Markup, and Profit). If you are running any business or you are the owner of any business and want to grow your business or finance company then this Margin Calculator tool will help you to grow your business financially.