Body Surface Area Calculator

Estimate body surface area from height and weight using the Mosteller formula.

InputsChange a value to recalculate instantly

Height

Weight

ResultUpdates as you type

Mosteller BSA1.84 m²

Du Bois BSA1.85 m²

How it worksTransparent math

FormulaBSA=√(height×weight/3600)

Estimates body surface area using the Mosteller and Du Bois equations.

Result breakdownSee the important numbers together

1Mosteller BSA1.84 m²

2Du Bois BSA1.85 m²

λ DooMathWork with this calculation

Local · deterministic · optional

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Quick mathNatural-language-style shortcuts for deterministic arithmetic.

Calculator guide

How to use the Body Surface Area Calculator

Estimate body surface area from height and weight using the Mosteller formula.

01Set inputsChoose values, units and assumptions.

02Apply the modelBSA = √(height(cm) × weight(kg) ÷ 3600)

03Read the resultCheck the output against the assumptions before using it.

menu_book

Estimate body surface area from height and weight using the Mosteller formula.

functions

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

fact_check

Review the inputs, units and assumptions before using the result for a real decision.