Product Margin Calculator

Margin is profit as a percent of the selling price, while markup is profit as a percent of the product cost. A $40 item sold for $100 at a $45 profit has a 45 percent margin but a 112.5 percent markup. Margin can never exceed 100 percent; markup can.

Net profit is the selling price minus the product cost, shipping you absorb, the marketplace or payment fee (a percent of the price) and any other per-unit costs you enter. The fee amount equals the price times the fee percent divided by 100.

Yes. If your combined costs are higher than the selling price the net profit and net margin turn negative, which means you lose money on each unit. That is a useful signal to raise the price or cut a cost.

It varies by niche, but many ecommerce sellers aim for a net margin of roughly 10 to 30 percent after all costs. Lower-priced or fee-heavy marketplaces tend to sit at the lower end, so always check your own numbers.

Yes. The calculation runs entirely in your browser. Nothing you type is sent to a server, stored or shared, so you can use it for sensitive pricing without worry.