What the tool does, how to run it, and what to expect from the result.
Calculate gross profit and gross profit margin from revenue and cost of goods sold, with the matching markup on cost. The math updates instantly and runs on your device, so it is fast, private, and available offline.
A quick way to understand who this helps, what it solves, and where it connects next.
Shoppers, students, freelancers, and anyone who needs a quick, private calculation.
Fast everyday math without a spreadsheet, app install, or sign-up.
Short answers for the questions people usually have before trying a utility like this.
Yes. It is completely free, with no sign-up, no watermark, and no usage limits.
No. Amounts are currency-neutral and use the same unit across all inputs, so it works in any country.
Gross margin = (revenue − COGS) ÷ revenue × 100. Revenue of $50,000 with $30,000 COGS is a 40% gross margin.
Margin divides gross profit by the selling price, markup divides it by the cost. The same $20,000 profit is a 40% margin but a 66.67% markup.
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Enter your numbers and the result updates live in your browser. Nothing is uploaded and no server is used.
Calculations run locally in your browser. Amounts are shown without a currency symbol so they work anywhere.