Body Surface Area Calculator

Estimate body surface area (BSA) in square meters — commonly used for medication dosing and clinical reference.

Measurements

Weight (kg)

Height (cm)

Formula

Mosteller: BSA = √(height(cm) × weight(kg) / 3600)

Du Bois & Du Bois: BSA = 0.007184 × height(cm)^0.725 × weight(kg)^0.425

Haycock: BSA = 0.024265 × height(cm)^0.3964 × weight(kg)^0.5378

This is a general reference calculator, not a substitute for professional medical dosing guidance.