Body Surface Area Calculator

By its name, body surface area (BSA) is the total surface area of a human body. In many situations, BSA is a better indicator of metabolic mass than body weight since it is less affected by abnormal body fat. Directly measurement of body surface area is difficult. For estimation, many formulas have been published based on the body weight and body height. Some formulas are also based on gender. We give out results for most popular formulas.

Gender  
Body Weight
Body Height feet inches     OR    
 

RelatedArea Calculator | Surface Area Calculator


Typical BSA for newborn is 0.25 m2, child of 2 years old 0.5 m2, child of 10 years old 1.14 m2, adult women 1.6 m2, adult man 1.9 m2. The following are the popular body surface area estimation formulas.


Du Bois formula:
BSA = 0.007184 × W0.425 × H0.725
Du Bois D, Du Bois EF (Jun 1916). "A formula to estimate the approximate surface area if height and weight be known". Archives of Internal Medicine 17 (6): 863-71. PMID 2520314. Retrieved 2012-09-09.

Mosteller formula:
BSA = = 0.016667 × W0.5 × H0.5
Mosteller RD. "Simplified calculation of body-surface area". N Engl J Med 1987; 317:1098. PMID 3657876.

Haycock formula:
BSA = 0.024265 × W0.5378 × H0.3964
Haycock GB, Schwartz GJ, Wisotsky DH "Geometric method for measuring body surface area: A height-weight formula validated in infants, children and adults" J Pediatr 1978, 93:62-66.

Gehan and George formula:
BSA = 0.0235 × W0.51456 × H0.42246
Gehan EA, George SL, Cancer Chemother Rep 1970, 54:225-235

Boyd formula:
BSA = 0.03330 × W(0.6157 - 0.0188 × log10(W) × H0.3
Boyd, Edith (1935). The Growth of the Surface Area of the Human Body. University of Minnesota. The Institute of Child Welfare, Monograph Series, No. x. London: Oxford University Press

Fujimoto formula:
BSA = 0.008883 × W0.444 × H0.663
Fujimoto S, Watanabe T, Sakamoto A, Yukawa K, Morimoto K. Studies on the physical surface area of Japanese. 18. Calculation formulae in three stages over all ages. Nippon Eiseigaku Zasshi 1968;5:443-50.

Takahira formula:
BSA = 0.007241 × W0.425 × H0.725
Fujimoto S, Watanabe T, Sakamoto A, Yukawa K, Morimoto K. Studies on the physical surface area of Japanese. 18. Calculation formulae in three stages over all ages. Nippon Eiseigaku Zasshi 1968;5:443-50.

Schlich formula:
Women BSA = 0.000975482 × W0.46 × H1.08
Men BSA = 0.000579479 × W0.38 × H1.24
Schlich E, Schumm M, Schlich M: "3-D-Body-Scan als anthropometrisches Verfahren zur Bestimmung der spezifischen Korperoberflache". Ernahrungs Umschau 2010;57:178-183