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ARVENRA
Body composition & weight

Body Surface Area Calculator

Total body surface area, with five standard clinical formulas.

Body surface area is used in medicine to normalise figures such as cardiac output and kidney filtration rate. Five common formulas are computed side by side so you can see how they differ.

Your details

Typical range: 100 – 250

Typical range: 25 – 400

The values you enter are calculated in your browser only — nothing is stored or transmitted.

Fill in your details and press calculate — your result will appear here.

Formula and method

Mosteller is the default: it has the simplest form and agrees closely with Du Bois across the normal range.

Formula used

Mosteller (default) plus Du Bois, Haycock, Gehan-George and Boyd

Assumptions and limits

  • These formulas estimate from height and weight; none is a direct measurement.

Scientific sources

  1. Mosteller RD. “Simplified calculation of body-surface area.” N Engl J Med. 1987;317(17):1098.

    View source

  2. Du Bois D, Du Bois EF. “A formula to estimate the approximate surface area if height and weight be known.” Arch Intern Med. 1916;17:863-871.

  3. Haycock GB, Schwartz GJ, Wisotsky DH. “Geometric method for measuring body surface area.” J Pediatr. 1978;93(1):62-66.

  4. Gehan EA, George SL. “Estimation of human body surface area from height and weight.” Cancer Chemother Rep. 1970;54(4):225-235.

  5. Boyd E. The Growth of the Surface Area of the Human Body. University of Minnesota Press, 1935.

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