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Body Surface Area Calculator

Body Surface Area Calculator

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We're working on a comprehensive educational guide for the Body Surface Area Calculator in your language. The content below is shown in English.

Cos'è Body Surface Area Calculator?

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Body Surface Area (BSA) is used in medicine to calculate drug doses, burn area, and cardiac output. The Mosteller formula is the most widely used due to its simplicity.

Calkulon makes complex calculations simple — built for students and everyday problem-solvers.

Formula

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f(x)Mosteller: BSA (m²) = √(Height(cm) × Weight(kg) / 3,600); DuBois: BSA = 0.007184 × H^0.725 × W^0.425

Leggenda delle variabili

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SimboloNomeUnitàDescrizione
BSABody Surface Aream²—
HHeightcm—
WWeightkg—

Come Body Surface Area Calculator

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  1. 1Mosteller: BSA (m²) = √(Height(cm) × Weight(kg) / 3,600)
  2. 2DuBois: BSA = 0.007184 × H^0.725 × W^0.425
  3. 3Boyd: accounts better for extremes of weight
  4. 4Normal adult BSA: approximately 1.7–1.9 m²

Esempi risolti

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Esempio 1
Dato:175cm, 70kg (Mosteller)
Risultato:BSA = √(175×70/3600) = √3.403 = 1.845 m²

Applicazioni pratiche

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Oncology chemotherapy dosing

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Paediatric medication calculations

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Burn injury assessment

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Cardiac output estimation

BSA by Age (Mosteller)

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AgeAverage BSA (m²)
Newborn0.25
1 year0.47
5 years0.73
10 years1.14
Adult male1.90
Adult female1.60

Domande frequenti

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Q

Why is BSA used instead of weight for drug dosing?

A

BSA correlates better with physiological processes (metabolic rate, organ function) than weight alone.

Q

What's the normal adult BSA range?

A

Typically 1.7–1.9 m². Average adult ≈ 1.8 m². Children much smaller proportionally.

Q

Which formula should I use?

A

Mosteller is simpler and preferred in most modern clinical settings. DuBois and Boyd for specific populations.

Formula-verified for precision
Reviewed October 2026
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