Body Surface Area Calculator
Calculates total body surface area from height and weight using the Mosteller formula, with Du Bois, Haycock and five other published formulas shown for comparison. BSA is widely used for clinical dosing and cardiac indices.
TheCalculators — Body Surface Area Calculator
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Body Surface Area (Mosteller)
1.84 m²
= 19.9 ft² · average of 8 formulas: 1.83 m²
- Mosteller
- 1.84 m²
- Du Bois
- 1.85 m²
- Haycock
- 1.85 m²
- Gehan & George
- 1.85 m²
- Boyd
- 1.85 m²
- Fujimoto
- 1.80 m²
- Takahira
- 1.86 m²
- Schlich
- 1.76 m²
BSA formulas compared
Typical values: newborn 0.25 m², ten-year-old 1.14 m², adult woman 1.6 m², adult man 1.9 m².
BSA is used for chemotherapy dosing and cardiac indices; accuracy drops at extremes of height and weight. Estimates for informational purposes only — not medical advice.
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Formula
Mosteller: BSA = √(height(cm) × weight(kg) / 3600) · Du Bois: BSA = 0.007184 × W^0.425 × H^0.725 · Haycock: BSA = 0.024265 × W^0.5378 × H^0.3964
- • Multiply height in cm by weight in kg and divide by 3600.
- • Take the square root — this is the Mosteller BSA in m².
- • Multiply by 10.7639 to express the result in ft².
Pro tips
- • Mosteller is the most commonly used formula because it is simple and agrees well with Du Bois.
- • Du Bois remains popular for chemotherapy dosing in both obese and non-obese patients.
FAQ
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