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Free Profit Margin Calculator Online
Free Profit Margin Calculator Online is a free online tool by US AI. Margin & markup. It runs completely in your browser — no signup, no download, works on mobile and desktop.
📖 How to use
- Enter cost price and selling price to see your profit, margin and markup percentages.
- Open the tool with the button above — it loads instantly.
- Your work stays on your device; nothing is uploaded anywhere.
✨ Why use this tool?
US AI's free profit margin calculator online is fast, private and 100% free forever. Bookmark this page and share it with anyone who needs it.
❓ Frequently asked questions
What is profit margin?
Profit margin is profit expressed as a percentage of the selling price. A $20 profit on a $100 sale is a 20% margin.
What is the difference between margin and markup?
Margin is profit divided by selling price; markup is profit divided by cost. A 25% markup equals a 20% margin — they are not the same number.
What is gross margin vs net margin?
Gross margin uses revenue minus cost of goods sold; net margin subtracts all expenses including tax, giving the true bottom-line percentage.