Profit Margin Calculator

Work out the profit and margin percentage on any sale. Everything runs in your browser.

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How the margin calculator works

Enter your cost price and selling price. The tool shows your profit in dollars and the margin as a percentage of the selling price.

Margin vs markup

Margin is profit divided by the selling price, while markup is profit divided by the cost. This tool shows the margin, which is what businesses track for profitability.

Frequently asked questions

It varies by industry — retail is often 20–50%, while groceries run much lower. Compare within your own sector.
This tool shows margin (profit ÷ selling price). Markup is profit ÷ cost, a related but different figure.