BMI & BSA Calculator
Calculate BMI and BSA using DuBois, Mosteller, and Haycock formulas with side-by-side comparison.
BMI
—kg/m²BSA (Du Bois)
—m²BMI CLASSIFICATION (WHO)
Underweight
0–18.5
Normal
18.5–25
Overweight
25–30
Obese I
30–35
Obese II
35–40
Obese III
40–∞