Enter what an item costs you and what you sell it for. You get the profit, the margin (profit as a share of the price) and the markup (profit as a share of the cost).
Gross margin
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Margin and markup use the same profit but divide it by different numbers. Buying at 60 and selling at 100 gives 40 profit: a 40% margin (40 ÷ 100) and a 66.7% markup (40 ÷ 60).
Margin = (Price − Cost) ÷ Price · Markup = (Price − Cost) ÷ Cost
To hit a target margin, divide the cost by (1 − margin): for a 40% margin on a cost of 60, the price is 60 ÷ 0.6 = 100.
No. Margin is profit divided by price, so it can approach but never reach 100%. Markup can be any size.
This is gross margin on a single item. Net margin also subtracts overheads such as rent, wages and tax.