In physiology and medicine, the Body Surface Area
(BSA) is the measured or calculated surface of a human
body. For many clinical purposes BSA is a better
indicator of metabolic mass than body weight because
it is less affected by abnormal adipose mass.
Estimation of BSA is simpler than many measures of
volume. BSAcalc is the freeware program for the
calculation of the Surface Area of the Body. The
distinctive feature of BSAcalc is that it has a large
selection of formulas for the calculation. These
latest updates to the BSAcalc include calculation the
Body Mass Index (BMI). BMI is a simple index of weight-
for-height that is commonly used to classify
underweight, overweight and obesity in adults. BMI is
defined as the weight in kilograms divided by the
square of the height in meters (kg/m2). BMI has been
used by the World Health Organization as the standard
for recording obesity statistics since the early
1980s. BMI is an inexpensive and easy-to-perform
method of screening for weight categories that may
lead to health problems. Simple convenient user

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