1. Home
  2. Clinical resources
  3. eviQ calculators

Body Surface Area Calculator

On this page
Expand all Collapse all Back to top
  • Ideal body weight for men1 = 50 kg + 0.9 kg for each cm over 152 cm
  • Ideal body weight for women1 = 45.5 kg + 0.9 kg for each cm over 152 cm
  • Adjusted body weight 2 = IBW + 0.4 (actual body weight - IBW)
  • Body Surface Area (BSA) (Dubois and Dubois)3 = 0.007184 x (patient height in cm)0.725 x (patient weight in kg)0.425
  • Body Surface Area (BSA) (Mosteller)4 =(patient height in cm * patient weight in kg / 3600)1/2
  1. Devine BJ. Gentamicin therapy. Drug Intell Clin Pharm. 1974; 8:650-5.
  2. Erstad BL. Dosing of medications in morbidly obese patients in the intensive care unit setting. Intensive Care Med. 2004; 30:18-32.
  3. Dubois D, Dubois EF. A formula to estimate the approximate surface area if height and weight be known. Arch Intern Med. 1916; 17:863-871.
  4. Mosteller RD. Simplified calculation of body surface area. NEJM. 1987; 317:1098.

Version 2

Date Summary of changes
31/05/2017

Transferred to new eviQ website.

Disclaimer: The Cancer Institute NSW does not warrant or represent that the Information is free from errors or omission. Furthermore, changes in circumstances after the time of publication of the Information may impact on the accuracy of the Information. The information provided is a guideline to standard practice and not a substitute for clinical judgement. Use is subject to eviQ’s disclaimer available at www.eviQ.org.au.

Send feedback for this page

The currency of this information is guaranteed only up until the date of printing, for any updates please check:

https://www.eviq.org.au/p/3198

20 Apr 2024