Example: Weight: 170 lb · Height: 70 in → Body surface area: 1.95 m².
Formula: Du Bois
Frequently asked questions
How do I calculate body surface area? Enter your numbers above and the result updates instantly. For example: Weight: 170 lb · Height: 70 in → Body surface area: 1.95 m².
Is this Body Surface Area 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 body surface area. Results are estimates for planning — not financial, tax, medical, engineering, or legal advice.