This BSA Calculator estimates body surface area by 5 different formulas.
The BSA Calculator estimates body surface area based on age, gender, height and weight by 5 different formulas.
The five methods to calculate BSA
Body surface area represents the total surface of the human body and its determination has several applications in medicine such as IV fluid measurements and drug dosage.
There are several estimation formulas available for use, the most common one being that published by Mosteller in 1987.
Mosteller’s formula
BSA = (((Height in cm) * (Weight in kg))/ 3600)^½
Boyd’s formula
BSA = 0.0003207 * ((Height in cm)^0.3) * ((Weight in gm)^(0.7285 - ( 0.0188 x Log(grams)))
DuBois’s formula
BSA = 0.007184 * ((Height in cm)^0.725) * ((Weight in kg)^0.425)
Gehan & George’s formula
BSA = 0.0235 * ((Height in cm)^42246) * ((Weight in kg)^0.51456)
Haycock’s formula:
BSA = 0.024265 * ((Height in cm)^3964) * ((Weight in kg)^0.5378)
Average BSA determinations
Children (9 years) 1.07 m2
Children (10 years) 1.14 m2
Children (12-14 years) 1.33 m2
Adult women 1.6 m2
Adult men 1.9 m2
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