Body Surface Area Calculator
Estimate body surface area in m² with the Mosteller formula — used in dosing and physiological indices.
Runs 100% in your browser — nothing is uploaded.
Result
Formula
BSA = √(height(cm) × weight(kg) ÷ 3600)
About this calculator
Estimate body surface area (BSA) in square meters from a person's weight and height using the Mosteller formula. BSA is commonly used in clinical settings for dosing certain medications and for calculating physiological parameters such as cardiac index and glomerular filtration rate.
How to use
- 1
Enter your weight in kilograms in the 'Weight (kg)' field.
- 2
Enter your height in centimeters in the 'Height (cm)' field.
- 3
Click Calculate to see your body surface area in m².
Frequently asked questions
What is body surface area (BSA)?
Body surface area is the total surface area of the human body. It is a physiological measure used in medicine for various calculations, including drug dosing and cardiac output.
Why is the Mosteller formula used?
The Mosteller formula is simple, requires only height and weight, and provides accurate estimates for most patients. It is widely used in clinical practice.
Can I use this calculator for children?
Yes, the Mosteller formula can be used for children, but for pediatric dosing, other formulas may be more appropriate. Consult a healthcare professional.
Please note: Results are estimates for general information only and are not professional or medical/financial advice.