Profit Margin Calculator: Profit, Margin and Markup

Profit margin is the share of each sale you actually keep after the cost of the product. It is the number that decides whether a price is healthy or quietly bleeding you dry. This calculator takes your cost and your selling price and returns three figures at once: the profit per unit in dollars, the profit margin as a percentage of the price, and the markup as a percentage of the cost, so you can price a product and understand the result in one pass.

How to calculate profit margin

Start with profit: selling price minus cost. If a product costs you 40 dollars and sells for 100, your profit is 60 dollars. Profit margin expresses that profit as a share of the selling price, so it is 60 divided by 100, which is 60 percent. In other words, 60 cents of every dollar you charge is profit and 40 cents covers the cost. Margin is always calculated against the price, never the cost, which keeps it capped at 100 percent and makes it easy to compare across products.

The calculator updates all three numbers as you type, so you can nudge the price up or down and watch the margin move. That live feedback is the fastest way to find a price that hits a target margin.

Margin versus markup, and why they differ

Margin and markup describe the same profit from two different angles, and mixing them up is one of the most common pricing mistakes. Margin divides profit by the selling price. Markup divides the same profit by the cost. The 40 dollar product sold at 100 has a 60 percent margin but a 150 percent markup, because 60 dollars of profit is 60 percent of the 100 dollar price yet 150 percent of the 40 dollar cost.

The practical takeaway: a 50 percent markup does not give you a 50 percent margin. A 50 percent markup on a 40 dollar cost sells at 60 dollars, which is only a 33 percent margin. When a supplier or a spreadsheet quotes a percentage, always check which of the two they mean before you price.

What counts as a good profit margin

There is no universal answer, because margins vary wildly by industry. Grocery and general retail often run on single digit to low double digit margins and make it up on volume, while software, consulting and premium brands can hold margins of 70 percent or more. The honest test is whether your margin covers your overheads, marketing and tax with enough left to reinvest and still grow. Compare yourself to your own category, not to a headline number.

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