Profit Margin Calculator

Understanding the profitability of your products or services is essential for sustainable business growth. By entering your cost of goods sold and total sales revenue, the Profit Margin Calculator instantly reveals your gross profit amount, your gross profit margin percentage, and the effective markup percentage. These three figures together give you a clear picture of how efficiently your pricing converts revenue into profit and how much headroom you have to absorb cost increases or offer discounts. Gross profit margin is expressed relative to revenue, while markup is expressed relative to cost — both measures describe the same underlying profit but from different perspectives, and knowing both helps when setting prices and negotiating supplier costs. Consistently monitoring gross margin across different products or service lines helps identify which offerings are driving profitability and which may need repricing, cost reduction, or discontinuation to protect the overall financial health of the business. This tool is equally valuable for e-commerce sellers, brick-and-mortar retailers, freelancers pricing their services, and business owners evaluating a new product line before committing to it.

The calculator starts by subtracting the cost of goods from the sales revenue to find the gross profit dollar amount. That gross profit is then divided by the total revenue and multiplied by 100 to produce the gross profit margin percentage — showing how much of each revenue dollar is retained as profit after covering direct costs. To calculate the markup percentage, the same gross profit figure is divided by the cost (rather than revenue) and multiplied by 100. Because markup divides by a smaller number (cost) than margin divides by (revenue), markup always produces a higher percentage than margin for the same transaction. For example, a product costing $60 and selling for $100 yields a 40% margin but a 66.7% markup — the same $40 profit described two different ways.