Enter what a product costs you and the price you sell it for, and this calculator returns the profit per unit, the gross margin percentage and the markup percentage. Margin and markup are easy to confuse: margin is profit as a share of the selling price, while markup is profit as a share of the cost, and the same profit gives two very different percentages. Seeing both together stops the common pricing mistake of quoting a markup when you meant a margin. This is the everyday tool for setting retail prices, checking a wholesale quote, or sizing up how much room a product has. It works in any currency because it only deals with the numbers you enter, and every result is computed instantly and locally in your browser.