# Simple body surface area calculator

Calculate the body surface area using the Mosteller, DuBois, Haycock, Gehan & George and Boyd formulas using this online calculator.

[to-medical-warning][/to-medical-warning][to-calculator-info][/to-calculator-info]

[calculator]

[calculator-input name=“height” label=“body height” unit=“m”][/calculator-input] [calculator-input name=“weight” label=“body weight” unit=“kg”][/calculator-input]

[calculator-expression name=“mosteller” formula=“sqrt((height*100*weight)/3600.0)” unit=“m²”] [calculator-expression name=“dubois” formula=“0.20247 * pow(height, 0.725) * pow(weight, 0.425)” unit=“m²”] [calculator-expression name=“haycock” formula=“0.024265 * pow(height*100, 0.3964) * pow(weight, 0.5378)” unit=“m²”] [calculator-expression name=“gehanGeorge” formula=“0.0235 * pow(height*100, 0.42246) * pow(weight, 0.51456)” unit=“m²”] [calculator-expression name=“boyd” formula=“0.0003207 * pow(height*100, 0.3) *   pow(weight*1000, 0.7285 - ( 0.0188 * log(weight*1000) / log(10)))” unit=“m²”]

[calculator-output name=“body surface area” unit=“m²”]

[/calculator]

Sources & Formulae: Halls.md