Profit Margin Calculator

A profit margin calculator answers the question every business eventually has to face: out of every dollar that comes in, how much actually stays as profit? Enter revenue and costs and it calculates gross profit margin, net profit margin, or markup percentage, depending on which figure you need — three related but distinct numbers that get confused with each other constantly, even by experienced business owners.

This tool is useful for small business owners pricing a product, freelancers setting a rate, e-commerce sellers checking whether a sale price still leaves room for profit, and anyone reviewing a income statement who wants to see the margin behind the raw dollar figures. Because margin is a percentage rather than a dollar amount, it also makes it possible to compare profitability across products or time periods of very different sizes.

Margin and markup look similar on the surface — both compare a selling price to a cost — but they're calculated against different bases and produce different percentages for the same numbers, which trips people up when pricing a product for a target profit level. This calculator keeps gross margin, net margin, and markup as separate, clearly labeled calculations so the right formula gets applied to the right question every time.

Gross margin, net margin, and markup all describe profitability, but they measure it against different numbers, and treating them as interchangeable is one of the most common pricing mistakes a business can make. Gross margin compares profit to revenue after subtracting only the direct cost of producing what you sold (cost of goods sold, or COGS). Net margin compares profit to revenue after subtracting COGS and every other operating expense, giving a fuller picture of what's actually left over.

Markup is calculated differently from both: instead of dividing profit by revenue, it divides profit by cost. Because cost is always smaller than the resulting selling price (assuming you're profitable), a markup percentage is always higher than the margin percentage for the same sale — a $50 cost sold for $75 has a $25 profit, which is a 33.3% gross margin against the $75 revenue, but a 50% markup against the $50 cost.

• Gross margin = profit ÷ revenue (after COGS only)
• Net margin = profit ÷ revenue (after COGS and all other expenses)
• Markup = profit ÷ cost, not revenue — always a higher number than margin

Gross profit margin is calculated as: ((revenue − cost of goods sold) ÷ revenue) × 100. It isolates how efficiently you're producing or acquiring what you sell, before any of the overhead costs of running the business — rent, salaries, marketing — come into the picture. It's the number to watch when evaluating whether a product itself is priced correctly, separate from how the rest of the business is run.

For example, a business with $100,000 in revenue and $60,000 in cost of goods sold has a gross profit of $40,000. Dividing that by revenue and multiplying by 100 gives a gross margin of 40% — meaning 40 cents of every revenue dollar remains after covering the direct cost of the product, before any other business expenses are paid.

• Formula: ((revenue − COGS) ÷ revenue) × 100
• Example: $100,000 revenue − $60,000 COGS = $40,000 gross profit → 40% gross margin

Net profit margin goes further than gross margin by also subtracting operating expenses — rent, payroll, marketing, software, and everything else it costs to run the business beyond the direct cost of the product itself. The formula is: ((revenue − COGS − operating expenses) ÷ revenue) × 100. This is the more complete measure of profitability, and it's almost always lower than the gross margin for the same business.

Using the same $100,000 revenue and $60,000 COGS example, add $20,000 in operating expenses: net profit is $100,000 − $60,000 − $20,000, which is $20,000, giving a net profit margin of 20%. Notice this is exactly half the 40% gross margin calculated for the same business — a reminder that gross margin alone can make a business look more profitable than it really is.

• Formula: ((revenue − COGS − operating expenses) ÷ revenue) × 100
• Example: $100,000 revenue − $60,000 COGS − $20,000 expenses = $20,000 net profit → 20% net margin

Markup is calculated as: ((selling price − cost) ÷ cost) × 100 — profit measured against what the item cost you, not what you sold it for. This is a common source of pricing errors, because a 50% markup does not produce a 50% margin; it actually produces a 33.3% margin, since the same dollar amount is being divided by a larger number (the higher selling price) when calculating margin.

For example, a product that costs $50 and is marked up by 50% sells for $75 (cost plus 50% of cost). The $25 profit divided by the $50 cost is indeed a 50% markup, but that same $25 profit divided by the $75 selling price is only 33.3% — a meaningfully different number if you were assuming markup and margin meant the same thing when setting a price target.

• Formula: ((price − cost) ÷ cost) × 100
• Example: $50 cost sold for $75 → $25 profit → 50% markup, but only 33.3% margin

If you know your cost and want to hit a specific gross margin target, the formula to work backward is: selling price = cost ÷ (1 − target margin as a decimal). This is more reliable than adding a markup percentage to cost, since markup and margin aren't the same number, and pricing off the wrong one will land you short of your actual margin goal.

For example, to hit a 40% margin on a product that costs $60, divide $60 by (1 − 0.40), or $60 ÷ 0.60, which gives a selling price of $100. Checking the math: $100 revenue minus $60 cost is $40 profit, and $40 ÷ $100 is exactly the targeted 40% margin — confirming the formula produces the intended result rather than an approximation.

There's no single margin number that applies across every business, since typical margins vary by industry based on inventory cost, competition, and overhead. Retail and grocery often run thin margins in the low single digits to around 5%, since the model relies on volume. Restaurants typically land in the 3-9% net margin range once food, labor, and rent are accounted for.

Service-based and software businesses can run much higher, since there's often little cost of goods sold to subtract — software companies frequently report net margins in the 60-80% range. Because of this spread, the most useful comparison isn't a universal benchmark but your own industry average or your own margin over time.