Profit Margin Calculator

What is gross profit margin?

Gross profit margin is the percentage of revenue that survives after subtracting the direct costs of producing or purchasing the goods sold. It is the cleanest single measure of how well a company turns a sale into profit before any operating, financing, or tax expenses come into play.

Formula for profit margin

Gross Profit Margin = (Revenue − Cost of Goods Sold) / Revenue. Multiply by 100 to express as a percentage. The numerator is also reported as “gross profit” on most income statements — both inputs sit at the very top of the statement, before operating expenses.

How to calculate gross margin

You only need two numbers from the income statement: revenue (sometimes called net sales) and cost of revenue (or cost of goods sold). Plug them into the formula and the calculator returns gross profit in dollars and the margin as a percent.

• Revenue — total sales for the period, net of returns and allowances.
• COGS — direct costs to produce the goods sold (raw materials, direct labor, manufacturing overhead, freight-in).

Worked example

A company posts $100 of revenue and $75 of cost of goods sold. Gross profit is $25 and the gross margin is $25 / $100 = 25%. That is a textbook ratio for a healthy mid-margin business — software firms run higher, retailers run lower.

Gross vs operating vs net margin

Gross margin uses only COGS. Operating margin further subtracts SG&A, R&D, and other operating expenses. Net margin subtracts everything — interest, tax, and one-off items. Each layer answers a different question: gross margin = unit economics; operating margin = run-the-business profitability; net margin = bottom-line profitability after all costs.

How to use profit margin in investing

Track the trend more than the level. A company whose gross margin has expanded for eight consecutive quarters is doing something right — pricing power, scale economies, or favorable mix shift. A company whose gross margin is shrinking under stable revenue is losing pricing power, dealing with input-cost inflation, or losing market share to a cheaper competitor.

Limitations of gross margin

Gross margin says nothing about overhead, marketing intensity, R&D burden, or capital structure. A 70% gross margin on a SaaS product is great, but if the company spends 80% of revenue on sales and marketing, it still loses money. Always pair gross margin with operating margin and free cash flow.

Margin is a window into pricing power

Gross profit margin distills hundreds of operating decisions — pricing, sourcing, product mix, manufacturing efficiency — into a single percentage. It is the fastest screen for whether a business has structural pricing power or commodity-like economics.