**BSA Calculator**(Body Surface Area) is a tool used to estimate the total surface area of a human body. BSA is commonly used in medical settings for various purposes, such as determining dosages for medications, assessing nutritional needs, and evaluating physiological functions.

**BSA Calculator**

**Body Surface Area (BSA)** is a measurement that reflects the total surface area of a person’s body. It’s expressed in square meters (m²) and is used because many physiological processes correlate more closely with BSA than with body weight alone.

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**Why is BSA Important?**

**Medication Dosing:** Certain medications, especially chemotherapy drugs, are dosed based on BSA to ensure the correct therapeutic effect while minimizing toxicity.

**Physiological Assessments:** BSA is used to calculate cardiac index (cardiac output normalized to BSA) and evaluate metabolic rates.

**Nutritional Needs:** BSA can be used to estimate caloric and dietary requirements.

**How is BSA Calculated?**

There are several formulas for calculating BSA, with the most commonly used being the Mosteller, DuBois and DuBois, and Haycock formulas. Here’s a brief look at each: