How to use the Body Surface Area Calculator
Body surface area is used in medicine to dose some treatments. The calculator uses the Mosteller, DuBois and Haycock formulas.
Open the Body Surface Area Calculator →
What you need to enter
- Height (cm)
- Weight (kg)
The formula
Mosteller: √(height cm × weight kg ÷ 3600).
Worked example
Using the default values in the calculator:
- Height (cm): 175
- Weight (kg): 72
| Mosteller | 1.871 m² |
| DuBois | 1.87 m² |
| Haycock | 1.875 m² |
Tips for better results
- The formulas give similar results for adults.
- Doctors choose the method used in practice.
Common mistakes to avoid
- Using it to decide doses yourself.
- Mixing units.
Please note: Health calculators and guides give general estimates, not medical advice. Talk to a doctor or other qualified professional about your own health. See our Disclaimer.