Profit Margin Calculator — Free Online Tool
Calculate gross margin, markup and profit from cost & revenue. · No signup · Works on mobile
100% private: your data is processed in your browser. Nothing is uploaded to our servers.
How to use the profit margin calculator
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Enter your product cost (what you pay to produce or buy it).
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Enter your selling price — or enter a target margin % to solve for price.
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See profit, margin %, and markup % update instantly.
What does this tool do?
This free profit margin calculator tells you exactly how profitable a sale is. Enter your cost and selling price to instantly see your gross profit, profit margin percentage, and markup percentage — or work backwards by entering a target margin to find the right selling price.
How does the profit margin calculator work?
Margin = (Revenue − Cost) ÷ Revenue × 100, while Markup = (Revenue − Cost) ÷ Cost × 100. A product costing $60 sold at $100 has a 40% margin but a 66.7% markup — confusing these two is one of the most common small-business pricing mistakes.
Frequently Asked Questions
What is the difference between margin and markup?
Margin is profit as a percentage of the selling price; markup is profit as a percentage of cost. Selling at $100 what cost $60 gives $40 profit = 40% margin but 66.7% markup. Using markup when you mean margin systematically underprices your products.
What is a good profit margin?
It varies by industry: grocery retail runs 1–3% net margins, restaurants 3–9%, e-commerce 5–15%, software 20–40%+. As a rule of thumb, a 10% net margin is average, 20% is strong, and under 5% means you have little buffer against cost increases.
Is the profit margin calculator really free?
Yes — 100% free with no hidden charges, trial limits, or premium tiers for core features. You don't need to create an account or enter an email address. The site is supported by non-intrusive display ads, which keeps every tool free for everyone.
Is my data private when using the profit margin calculator?
Completely. The profit margin calculator runs entirely in your browser using JavaScript — nothing you type or upload is sent to our servers. When you close the tab, your data is gone. This makes it safe for confidential documents, financial figures, and personal information.
Does the profit margin calculator work on mobile phones?
Yes. The profit margin calculator is built mobile-first and works on any phone or tablet with a modern browser — iPhone (Safari), Android (Chrome), and everything in between. The layout adapts to small screens, so buttons and inputs stay easy to tap on a 375px-wide display.
Do I need to install anything to use the profit margin calculator?
No. The profit margin calculator works directly in your web browser — no downloads, no extensions, no signup. Just open the page, use the tool, and get your result instantly. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.