1. What is Body Surface Area (BSA)? Definition: BSA is the calculated surface area of the human body, often used in medical practice for medication dosing and physiological measurements. Purpose: It provides a more accurate measure than body weight alone for determining proper drug dosages, especially for chemotherapy, pediatric medications, and other critical treatments. 2. How Does the Mosteller Formula Work? The calculator uses the Mosteller formula: Free Online Body Surface Area (BSA) Calculator for pediatric, adult and oncology patients. Calculates using Du Bois, Mosteller, Haycock, Gehan & George, Boyd, Fujimoto and Takahira methods. The BSA calculator allows you to easily calculate your body surface area (BSA), which is the external surface area of the our body given in square meters. If you know how to calculate BSA, you will find it very useful in medicine and physiology, as it is a more accurate indicator of metabolic mass (the body’s need for energy). Our BSA calculator uses the most common form, the Du Bois formula, by default. There are, however, many different BSA formulas in the Additional BSA calculations section (Fujimoto, Gehan & George, Haycock, and Mosteller).
