Body surface area is used in medicine to calculate doses of chemotherapy drugs, to assess cardiac output, and to adjust other clinical measurements for body size. The Mosteller formula — one of several in clinical use — takes the square root of height multiplied by weight, divided by 3600. Results vary with the formula used; always follow local protocol.
For clinical decision support only. Different BSA formulae produce different results; confirm which formula your local protocol requires before using this result for dose calculation. Not a substitute for clinical judgement.