Enter a cost and either a markup percentage or a selling price to calculate profit, markup, and margin.
How to Use the Markup Calculator
Toggle between "I Know My Markup %" and "I Know My Selling Price," enter a cost, and fill in whichever second field the mode calls for — selling price, profit, markup, and margin all update together.
This calculator sits next to the site's margin calculator on purpose, covering the same cost-and-price relationship from the other direction. Margin asks what share of the sale price is profit; markup asks how much was added on top of cost to get there. They describe the identical dollar of profit, just divided by two different numbers, which is exactly why people confuse them.
Selling Price = Cost × (1 + Markup % ÷ 100) [from markup]
Markup % = (Selling Price − Cost) ÷ Cost × 100 [from selling price]
Margin % = Profit ÷ Selling Price × 100Take a $40 item marked up 50% to $60. Profit is $20 either way — but $20 divided by the $40 cost is a 50% markup, while that same $20 divided by the $60 sale price is only a 33.3% margin. Set a retail price by targeting a "50% profit" using the wrong one of these two numbers and the actual dollar profit ends up quite different from what was planned.
Both figures are shown on every calculation regardless of which mode is active, specifically so the gap between them is visible rather than something you'd have to compute separately. If a markup and margin percentage ever come out looking equal, check the numbers again — it only happens exactly at 0%.