Profit Margin Calculator

Profit margin is the ratio most commonly quoted to describe how a business is doing financially, yet it is frequently confused with markup, with gross profit, or with unit economics. This tool builds the standard income statement two levels deep so you can see gross and operating margins from a single set of inputs: revenue, cost of goods sold, and operating expenses.

Gross margin tells you what fraction of revenue survives the direct cost of producing what you sold. It is a pricing and production-efficiency metric. Operating margin tells you what fraction of revenue survives both direct cost and overhead. It is the better overall health indicator because it captures whether the business scales enough to cover its fixed cost base. Net margin (not computed here; requires interest, taxes, and other non-operating items) goes one level deeper to the bottom line.

Typical margin ranges vary widely by industry. What matters is not the absolute number but the trend against your own history and the comparable for your industry. See the break-even analysis tool for the contribution-margin view of the same underlying economics.

Gross profit = revenue - COGS. Cost of goods sold is the direct cost of producing what you sold: raw materials, direct labor, packaging, payment processing. Excludes rent, admin salaries, marketing, and other overhead.

Gross margin % = gross_profit / revenue × 100. Expressed as a percentage of revenue, this is the single best metric for whether your pricing covers your direct cost of doing business.

Operating profit = gross_profit - operating_expenses. Operating expenses (opex) are all the overhead costs that do not vary directly with production volume: rent, salaries of non-production staff, software subscriptions, marketing, insurance.

Operating margin % = operating_profit / revenue × 100. This is often called "operating income margin" or EBIT margin in financial statements. Formal net margin goes one level further by subtracting interest and taxes; most small businesses focus on operating margin because interest and tax are a function of financing structure rather than business performance.

Use this at month-end or quarter-end to check whether gross and operating margins are tracking to plan, when evaluating whether to add a fixed cost (new hire, new office), or when comparing your business to published benchmarks for your industry. For project-level profitability on a per-engagement basis, use the project profitability calculator instead. For the break-even-volume perspective on the same underlying costs, see the break-even analysis tool.