logo

Body Surface Area Calculator

Multiple BSA formulas & Integrated Dosage Calculator


Height
:    

Weight:  


 (Optional)  Dose:  

  


References

1) DuBois D, DuBois DF. A formula to estimate the approximate surface area if height and weight be known.  Arch Int Med 1916;17:863-71.

Equation:  BSA (m2) = 0.007184 x Height(cm)0.725 x Weight(kg)0.425


2) Gehan EA, George SL. Estimation of human body surface area from height and weight. Cancer Chemother Rep 1970;54:225-35.

Equation:  BSA (m2) = 0.0235 x Height(cm)0.42246 x Weight(kg)0.51456


3) 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;93:62-6.

 Equation:  BSA (m2) = 0.024265 x Height(cm)0.3964 x Weight(kg)0.5378


4) Mosteller RD. Simplified calculation of body-surface area. N Engl J Med 1987;317:1098.

Equation:  BSA (m2) = SQR RT ( [Height(cm) x Weight(kg) ]/ 3600 )

 

 

Recommended references/reading:

  www.kidney.orghttp://www.epa.gov/ncea/efh/pdfs/efh-chapter06.pdf  |  Boomer.org
Verbraecken J, Van de Heyning P, De Backer W, Van Gaal L. Body surface area in normal-weight, overweight, and obese adults. A comparison study. Metabolism. 2006 Apr;55(4):515-24. 

"Body surface area prediction with the commonly used DuBois formula underestimated BSA in obese patients by as much as 3% (male) to 5% (female)."
http://clincancerres.aacrjournals.org/cgi/content/full/10/24/8325?ck=nck

"The Du Bois formula was challenged in 1970 by Gehan and George who directly measured the skin surface area of 401 individuals. They found that the Du Bois formula over-estimated body surface area by 15% in ~15% of cases..."
http://www.ncbi.nlm.nih.gov/sites/entrez - See citation

"We recommend the Gehan-George equation, however, because it is based on direct measurements in over 400 subjects, including both children and adults. "
more Career Center image description
Medical Calculators - A thru Z
Lab Values - A thru Z