Body Surface Area Calculator (Mosteller)

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PatientPlus articles are written by UK doctors and are based on research evidence, UK and European Guidelines. They are designed for health professionals to use, so you may find the language more technical than the condition leaflets.

Body Surface Area Calculator (Mosteller Method)
Height (cm)
Weight (kg)
Body Surface Area (m2)

Mosteller Method:[1] 

BSA (m2) = (height (cm) x weight (kg)/3600)½

eg, BSA (m2) = square root of (height (cm) x weight (kg)/3600)

See also separate Sunburn article.

Further reading & references

  1. Body Surface Area Calculator for medication doses;

Disclaimer: This article is for information only and should not be used for the diagnosis or treatment of medical conditions. EMIS has used all reasonable care in compiling the information but make no warranty as to its accuracy. Consult a doctor or other health care professional for diagnosis and treatment of medical conditions. For details see our conditions.

Original Author:
Dr Huw Thomas
Current Version:
Peer Reviewer:
Dr Colin Tidy
Document ID:
1876 (v25)
Last Checked:
Next Review:
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