Profit Margin Calculator
Calculate gross margin, markup, and profit from cost and selling price, with a margin-to-markup converter.
Use this calculator in your browser, review its inputs and assumptions, then continue to a full invoice or quote when ready.
How to use this calculator
Enter cost and selling price to compare gross profit, margin, and markup. Margin divides profit by selling price; markup divides profit by cost, so the two percentages are not interchangeable.
Understand the result
The calculation runs in your browser and exposes its inputs so you can check the result. It is intended for planning and does not replace tax, legal, lending, or accounting advice.