Health Calculators
Body Surface Area Calculator
Calculate body surface area using three formulas for medication dosing.
What is the Body Surface Area Calculator & How does it work?
The Body Surface Area (BSA) Calculator uses the Mosteller, DuBois, and Haycock formulas to estimate an individual’s BSA. This measurement is crucial in determining appropriate medication doses based on body size. The Mosteller formula is simple and widely used: (BSA = sqrt{frac{{weight (kg) times height (cm)}}{{3600}}}). The DuBois formula offers a more precise calculation with its empirical approach: (BSA = 0.2074 times weight^{0.425} times height^{0.725}). Lastly, the Haycock method is particularly accurate for children and smaller adults: (BSA = 0.03207 times weight (kg)^{0.425} times height (cm)^{0.725}).
BSA = sqrt{frac{{weight (kg) times height (cm)}}{{3600}}}
Var = meaning
Parameters
kg
cm
Mosteller BSA
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DuBois BSA
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Haycock BSA
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Frequently Asked Questions
How do I use the Body Surface Area Calculator?
Enter your weight in kilograms and height in centimeters. The calculator will display your BSA using three different formulas.
What is body surface area used for?
BSA is used to determine appropriate medication doses based on an individual's body size, ensuring effective treatment.
Which formula is the most accurate?
The DuBois formula is generally considered more precise than Mosteller and Haycock, but all provide useful estimates.
Can I use this calculator for children?
Yes, you can use it for children, but results may vary. Always consult with a healthcare professional for accurate dosing.
What are the units for weight and height?
Weight should be in kilograms and height in centimeters to get an accurate BSA calculation.
How often should I recalculate my BSA?
Recalculate your BSA whenever there is a significant change in body weight or height, typically at least annually.
Are there any side effects from knowing my BSA?
Knowing your BSA itself has no side effects. However, using it to adjust medication doses can affect how drugs work in your body.
Results are for informational purposes only and do not constitute professional advice.