How do I calculate profit margin? Enter your numbers above and the result updates instantly. For example: Revenue: $500,000 · Total costs: $380,000 → Profit margin: 24%.
Is this Profit Margin Calculator free? Yes — completely free with no sign-up or paywall. It runs entirely in your browser and keeps working offline; the numbers you enter never leave your device.
How accurate is it? It uses the standard published formula for profit margin. Results are estimates for planning — not financial, tax, medical, engineering, or legal advice.