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Body Surface Area Calculator
Enter height and weight to get BSA by two formulas.
Body Surface Area Calculator
Body surface area (Mosteller)√(height × weight ÷ 3600)
Du Bois
1.81 m²
BMI
24.2
Mosteller is the most widely used for chemotherapy dosing; protocols may specify another formula or a capped BSA. For professional use. Double-check every calculation against your local protocol, the drug’s product information and a second clinician. Not medical advice.
For trained professionals as an arithmetic aid only — not medical advice. Always verify doses and rates against your institution’s protocols and the product label. Disclaimer
Important
For healthcare professionals and students: arithmetic aid only — verify against local protocols and product information. Not medical advice.
Frequently asked questions
Is my data uploaded?
No. The calculation runs entirely in your browser — nothing you type is sent to a server.
Is it free?
Yes — free, unlimited and no sign-up.