Body Surface Area Calculator
BSA (m²) = √(Height(cm) × Weight(kg) ÷ 3600)√(170×70÷3600)=√(11900÷3600)=√3.306≈1.82 m²
Free online tool
Body Surface Area Calculator
Enter your height and weight to estimate your total body surface area.
Instant calculation
Body Surface Area Calculator
Enter your height and weight to estimate your total body surface area.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter height
Type your height in centimeters.
- 02
Enter weight
Type your weight in kilograms.
- 03
See BSA result
Calculate to see your body surface area in square meters.
The formula
How this calculation works
Mosteller formula used for medication dosing, especially chemotherapy.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
Height 170 cm, weight 70 kg — BSA?
√(170×70÷3600)=√(11900÷3600)=√3.306≈1.82 m²≈ 1.82 m²Common questions
Questions about this calculation
What is the Body Surface Area Calculator?
The Body Surface Area Calculator helps you calculate body surface area using the Mosteller formula. Enter your values and select Calculate to get an instant result.
How is the result calculated?
Mosteller formula used for medication dosing, especially chemotherapy.
Can you show an example?
Example: Height 170 cm, weight 70 kg — BSA? — ≈ 1.82 m².
Is my data saved when I use the Body Surface Area Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the Body Surface Area Calculator free to use?
Yes. The Body Surface Area Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
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