Donaldson R F Markup vs Margin Calculator
See both markup and margin side by side — they're often confused, but they're not the same number.
0Profit
0% Markup
0% Margin
Markup = profit ÷ cost (how much you added on top of cost). Margin = profit ÷ price (what share of the sale is profit). They use the same profit number but different denominators — that's why they're always different percentages for the same sale.