Body Surface Area Calculator

Body Surface Area (BSA) is the measured or calculated surface of a human body. It is used in clinical medicine primarily for calculating chemotherapy dosages, cardiac index, and burn surface area

The calculator uses the standard published formula for bsa. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with kilograms, centimetres, inches, square metres. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: DuBois & DuBois (1916): BSA = 0.007184 × height^0.725 × weight^0.425. Each step in the calculation is shown so you can verify the result manually.