ZovaTool

Body Surface Area Calculator

Average BSA
1.921 m²
Du Bois (1916)
1.927 m²
Mosteller (1987)
1.926 m²
Haycock (1978)
1.930 m²
Gehan-George (1970)
1.935 m²
Boyd (1935)
1.932 m²
Fujimoto
1.875 m²
Used for
• Chemotherapy dosing (mg/m²)
• Cardiac index (CO/BSA)
• Renal clearance normalisation (mL/min/1.73m²)
• Burn assessment (% BSA burned)

How to use the Body Surface Area Calculator

  1. Switch units and enter height + weight.
  2. Read the average BSA plus Du Bois, Mosteller, Haycock, Gehan-George, Boyd and Fujimoto results.
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BSA: critical in medicine, surprising elsewhere

Body Surface Area is the gold standard for chemotherapy dosing, cardiac index, and normalised renal clearance (mL/min/1.73m²).

Du Bois (1916) is the classic. Mosteller (1987) is a fast square-root approximation widely used in clinical practice. Haycock works well in paediatrics.

Different formulas vary by ~5%, which is why drug protocols often specify which formula to use.