Profit Margin
Gross margin, markup and profit from cost and selling price.
Gross profit margin
60.00%
$60.00 profit per unit · 150.0% markup
Profit
$60.00
Margin
60.00%
Markup
150.00%
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How the Profit Margin works
The GKCalculators Profit Margin calculator instantly computes your gross margin, markup percentage, and net profit from any cost and selling price combination—making it an essential tool for entrepreneurs, retailers, freelancers, and finance students who need to price products correctly and understand where their money is going.
This calculator takes two primary inputs—your cost price (what you pay to produce or acquire something) and your selling price (what the customer pays)—and derives three critical outputs: gross profit in dollars, gross margin as a percentage of revenue, and markup as a percentage of cost. These three figures tell a complete story about the financial health of a single transaction or product line, and understanding how they differ from one another is the first step toward building a profitable business pricing strategy.
Gross margin and markup are related but measure fundamentally different things, and confusing them is one of the most costly mistakes business owners make. Gross margin expresses profit as a fraction of the selling price, while markup expresses that same profit as a fraction of the cost. For example, if you buy a product for $60 and sell it for $100, your gross profit is $40. Your gross margin is 40% (profit divided by selling price), but your markup is 66.7% (profit divided by cost). Using markup figures when you meant margin—or vice versa—can cause you to underprice products and unknowingly erode your profitability at scale.
The factors that affect your margin go beyond the simple cost-vs-price gap. Variable costs like shipping, payment processing fees, returns, and material waste can quietly reduce your effective margin below what this calculator shows for the base transaction. That's why many seasoned business operators use this tool to set a target gross margin first—say, 50%—and then work backward to establish acceptable cost ceilings before negotiating with suppliers. Knowing your required margin gives you a clear walk-away point in any procurement conversation.
A common strategic mistake is treating margin as static once set. Savvy businesses revisit their margins regularly as input costs fluctuate due to inflation, currency shifts, or supply chain disruptions. Even a 5-percentage-point compression in gross margin can translate to a dramatic reduction in net income once operating expenses are accounted for. Using this calculator periodically—not just at launch—helps you stay ahead of cost creep and make proactive pricing adjustments before profitability is seriously impacted.
Formula
Margin = (Revenue − Cost) ÷ Revenue; Markup = Profit ÷ Cost
Pro tips
- Price from a target margin, not markup, to protect profitability.
Key terms
- Gross Profit
- — The absolute dollar difference between the selling price and the cost of goods sold, before any operating expenses are deducted.
- Gross Margin
- — Gross profit expressed as a percentage of the selling price, indicating how many cents of every revenue dollar are retained as profit before overhead.
- Markup
- — The amount added to the cost price to arrive at the selling price, expressed as a percentage of the cost rather than the selling price.
- Cost Price
- — The total amount a business pays to produce, source, or acquire a product or service before adding any profit.
- Selling Price
- — The final price at which a product or service is offered to the customer, which determines the revenue generated per unit sold.
- Break-Even Point
- — The selling price at which gross profit equals zero—the minimum price that recoups cost with no margin or markup.