Body Surface Area (BSA) Calculator

Calculates Body Surface Area (BSA) using the Mosteller, Du Bois, Haycock, and Gehan & George equations commonly utilized in clinical pharmacology.

Fitness & Clinical• Mosteller Formula: √(Height × Weight / 3600)

Body Surface Area (BSA) Calculator

Calculate total body surface area (m²) used for medical dosage and cardiac index.

Height50 – 250 cm

Weight20 – 350 kg

Body Surface Area IndexAbove Average

1.9m²

Above Average

Low Area

1-1.59

Adult Average

1.6-1.89

Above Average

1.9-2.19

High Surface Area

2.2-2.8

Mosteller1.91 m²

Du Bois1.9 m²

Haycock1.92 m²

Evidence-based estimations. Consult a physician for personalized guidance.

Clinical Formula & Calculation Standard

Official clinical definitions and validated mathematical models

Clinical Body Surface Area (BSA) Formulations

Mosteller: BSA (m²) = √([Height (cm) × Weight (kg)] / 3600) Du Bois & Du Bois: BSA = 0.007184 × Weight^0.425 × Height^0.725 Haycock: BSA = 0.024265 × Weight^0.5378 × Height^0.3964

Body Surface Area provides a normalized measurement of human body size used in clinical oncology chemotherapy dosing, hemodialysis adequacy, and cardiac index calculation.

Clinical Insights & Practical Usage

Average BSA for adult men is approximately 1.9 m² and for adult women is 1.6 m².
Mosteller's formula is the simplest and most frequently utilized in electronic health records.

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