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Profit Margin Calculator — Gross Margin & Markup

Enter your cost and revenue (or selling price). The calculator returns gross profit, profit margin percentage, and markup percentage — the three numbers every small business needs to price with confidence.

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What it cost you to make/deliver.

What you charge the customer.

Gross Profit

$50.00

Profit Margin

33.33%

Profit ÷ Revenue

Markup

50.00%

Profit ÷ Cost

Margin vs. markup — the pricing mistake that eats profits

Ask any small business owner: “If my cost is $100 and I sell for $150, what’s my margin?” The most common answer is “50%” — and it’s wrong. That’s 50% markup, but only 33.3% margin. Confusing the two is how a lot of contractors and shops accidentally lose money on jobs they thought were profitable.

Definitions

Typical gross margins by industry (2026, US)

These are gross margins (revenue minus direct cost of goods/services). Net margin — after overhead, taxes, and marketing — is usually 30-70% lower. Aim to be at or above your industry median.

Applying the number

Once you know the selling price that hits your target margin, use it as your line-item price in our invoice generator or send a formal quote. For hourly service work, feed the same numbers into our hourly rate calculator to translate margin into a per-hour rate.

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Frequently Asked Questions

Margin is profit as a percentage of the SELLING PRICE. Markup is profit as a percentage of the COST. A 50% markup only gives you a 33% margin — a common source of underpricing.