Body Surface Area Calculator

Calculate Your BSA

Unit System

Height (cm)

Weight (kg)

Formula Selection

Your Results

Average BSA

0.00 m²

Based on multiple formulas

Formula Comparison

Mosteller Formula Details

Most widely used formula, validated for all body types

BSA (m²) = √((height × weight) / 3600)

Best Used For

General population
Clinical settings
Drug dosing
All age groups

Limitations

Less accurate for extreme body types
May underestimate in obesity

Medical Applications

Drug Dosing

Used to calculate appropriate medication doses

Chemotherapy drugs
Cardiac medications
Antibiotics for severe infections

Burn Assessment

Calculating total body surface area affected by burns

Fluid replacement therapy
Burn severity assessment
Treatment planning

Cardiac Function

Indexing cardiac measurements

Cardiac output
Stroke volume
Valve area calculations