Body Surface Area (BSA) Calculator
Calculate Body Surface Area using the Mosteller formula.
Calculate Body Surface Area using the Mosteller formula. Enter your Height, Weight to get an instant body surface area. Formula: sqrt((height_cm * weight_kg) / 3600).
Body Surface Area
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How It Works
How It Works
This calculator estimates your Body Surface Area (BSA) using the Mosteller formula. BSA represents the total surface area of your body and is commonly used in medical settings.
To calculate it, the formula multiplies your height (in centimeters) by your weight (in kilograms), divides the result by 3600, and then takes the square root of that value. The final result is your body surface area in square meters.
- Enter your height in centimeters
- Enter your weight in kilograms
- Multiply height by weight
- Divide the result by 3600
- Take the square root to get BSA in m²
Understanding the Results
The result shows your total body surface area in square meters (m²). This value reflects the overall size of your body rather than just weight or height alone.
Healthcare providers often use BSA to determine proper medication dosages, fluid requirements, and other medical assessments. A higher BSA generally means a larger overall body size.
- The output is measured in square meters (m²)
- Higher values indicate a larger body surface area
- Common adult BSA values range from about 1.5 to 2.2 m²
- Used in medical dosing and treatment planning
Frequently Asked Questions
What is Body Surface Area (BSA) and why is it important?
Body Surface Area (BSA) is a measurement of the total surface area of the human body. It is commonly used in medical settings to calculate medication dosages, especially for chemotherapy, and to assess metabolic mass or organ function. BSA provides a more accurate dosing guideline than weight alone in certain clinical situations.
How does the BSA calculator work?
This calculator uses the Mosteller formula: BSA = √((height in cm × weight in kg) / 3600). You simply enter your height in centimeters and weight in kilograms, and the calculator applies the formula automatically. The result is expressed in square meters (m²), which is the standard unit for BSA.
When should I use the Mosteller formula for BSA?
The Mosteller formula is widely used in clinical practice because it is simple and provides accurate results for most adults and children. It is commonly used for medication dosing, especially in oncology and pediatrics. Healthcare providers often prefer it due to its ease of calculation and reliability.
Can I use this calculator for children?
Yes, the Mosteller formula is appropriate for both adults and children. It is frequently used in pediatric medicine to calculate safe medication dosages. However, always consult a healthcare professional before making medical decisions based on BSA results.
What units should I use for height and weight?
You must enter height in centimeters (cm) and weight in kilograms (kg) for accurate results. If your measurements are in inches or pounds, convert them before entering the values. Using incorrect units will produce inaccurate BSA calculations.
Is BSA the same as BMI?
No, BSA and BMI are different measurements. BMI (Body Mass Index) estimates body fat based on height and weight, while BSA measures the total surface area of the body. BSA is mainly used for medical dosing and physiological assessments, whereas BMI is used to categorize weight status.
Disclaimer
This health calculator is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Disclaimer.