Body Surface Area Calculator

Calculate your body surface area (BSA) using multiple medical formulas. Used for medication dosing and medical calculations.

Height

Weight

BSA (Mosteller)

1.82 m²

BSA (DuBois)1.81 m²

BSA (Haycock)1.83 m²

BSA (Gehan & George)1.83 m²

BSA (Mosteller)

1.82 m²

How to Use This Calculator

Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
Height — Your height in centimeters default: 170 cm.
Weight — Your weight in kilograms default: 70 kg.
Once all inputs are set, review your results in the Results panel. Here's what each output means:
BSA (Mosteller) — shown as a numeric value. This is the primary result of this calculator.
BSA (DuBois) — shown as a numeric value.
BSA (Haycock) — shown as a numeric value.
BSA (Gehan & George) — shown as a numeric value.
Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.

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Formula

BSA (Mosteller) = √(Height × Weight / 3600)

Calculate your Body Mass Index (BMI) to assess your weight category. Supports both imperial and metric units.

Calculate your ideal body weight using four scientific formulas. See your healthy weight range based on BMI and height.

Estimate your body fat percentage using the US Navy method. Determine your body composition category and fat vs lean mass.

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