See how much of every sales dollar a company actually keeps. Enter revenue, cost of goods sold, operating income and net income for gross, operating and net margins in one view.
Answer first: a profit margin is the share of revenue a company keeps as profit at a particular stage of its income statement. This net profit margin calculator computes all three key margins at once — gross, operating and net — so you can see exactly where a company makes its money and where its costs eat into each sales dollar.
Gross margin = (Revenue − COGS) ÷ Revenue
Operating margin = Operating income ÷ Revenue
Net margin = Net income ÷ Revenue
Example: on $1,000M of revenue with $600M of COGS, $200M of operating income and $150M of net income, the margins are 40%, 20% and 15% — the profit that survives at each successive layer of costs.
Reading the three margins together tells a story that any single number hides. Gross margin captures the raw profitability of the product itself — revenue minus the direct cost of making it. Operating margin then subtracts the cost of running the business: salaries, marketing, research, rent. Net margin is the final survivor, after interest and taxes have taken their share. Watching the profit shrink from gross to operating to net shows you exactly where a company's dollars go.
A high gross margin points to pricing power or a low-cost product — software and luxury brands often clear 70%–90%, while grocers and hardware makers scrape by on 20%–30%. Operating margin reveals how disciplined the company is with its overheads: two firms with the same gross margin can have very different operating margins depending on how much they spend on sales and administration. Net margin, the bottom line, folds in the company's debt load and tax situation — a heavily indebted firm can have a healthy operating margin but a thin net margin once interest is paid.
An absolute margin figure is almost meaningless without a comparison. A 5% net margin is excellent for a supermarket and alarming for a software company. The two questions worth asking are always: how does this margin compare with direct competitors, and how has it moved over time? Expanding margins usually mean growing pricing power, better scale or tighter cost control — a very healthy sign. Contracting margins can signal rising input costs, price competition or bloated spending, and often show up in the numbers long before they hit the headlines.
Profitability is only half the equation. A low-margin business can still be a wonderful investment if it turns its assets over rapidly — that is the insight behind return on assets, which multiplies net margin by asset turnover. A jeweller earns a fat margin on few sales; a discount retailer earns a thin margin on enormous volume; both can produce strong returns on capital. So use margins to understand how a company makes money, then combine them with turnover and return-on-capital measures to judge whether the overall business is genuinely excellent.
Reality check: margins vary enormously by industry and can be distorted by one-off gains or charges in a single year. This tool is educational, not investment advice. For income-statement basics, see the U.S. SEC at investor.gov.
Combine margins with efficiency in the return on assets and return on equity calculators, check cash conversion with the FCF yield calculator, and value the earnings with the P/E ratio calculator.
Last updated July 4, 2026 · Written by Mustafa Bilgic. Educational only — not financial advice.
Gross margin is revenue minus the direct cost of goods, divided by revenue. Operating margin also subtracts overheads like salaries and marketing. Net margin is the final profit after interest and taxes, divided by revenue.
It depends entirely on the industry. Software firms may exceed 25%, while grocers and airlines run on low single digits. Compare a company with its direct peers and its own history rather than to a universal benchmark.
Because they show where profit is won or lost. A strong gross margin with a weak net margin points to heavy overheads, interest or taxes. Tracking the drop from gross to net reveals exactly where a company's money goes.
Yes. A business with thin margins but rapid asset turnover can earn a high return on capital — think discount retailers. Margins describe how a company makes money; combine them with turnover and return-on-capital measures.