BSA Calculator

This BSA Calculator helps you estimate your Body Surface Area (BSA), which represents the total surface area of the human body.

Body Surface Area Calculator




BSA Formula (Mosteller)

BSA (m²) = √[(height (cm) × weight (kg)) ÷ 3600]

Parameters Explained

  • Height: measured in centimeters (cm)
  • Weight: measured in kilograms (kg)

How It Works

The calculator applies the Mosteller formula to estimate body surface area, a value commonly used in medical, nutritional, and fitness calculations.

Ethan builds the interactive health calculators on Height Growth Blog. Based in Denver, Colorado, he combines a software engineering background with a focus on evidence-based health tech, turning dense clinical guidelines — from CDC growth charts to NIH/IOM dietary references — into tools parents and teens can use in under a minute. Every calculator on the site, from BMI Percentile to Body Fat and Calcium Intake, is built directly from primary sources (NIH, AAP, CDC, Mayo Clinic) and cross-checked against peer-reviewed studies before launch.

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