Body Surface Area Calculator

- May 10, 2025

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Body Surface Area (BSA) is used in medicine for determining drug dosages, assessing metabolic rates, and evaluating organ function. This calculator provides BSA values using multiple formulas for medical reference.

Patient Information

Height:

Weight:

Patient Type:

Gender:

Advanced Options

Preferred Formula:

Decimal Places:

BSA Calculation Results

Formula Comparison

Formula	BSA (m²)	Year	Best For

Visual Comparison

Calculation Method

Clinical Applications

Drug Dosing

Many medications, especially chemotherapy drugs, are dosed based on BSA to optimise efficacy while minimising toxicity.

Cardiac Index

Cardiac output divided by BSA gives the cardiac index, a haemodynamic parameter standardised for body size.

Burn Assessment

BSA is used to calculate the percentage of body affected in burn patients and determine fluid requirements.

Renal Function

Glomerular filtration rate is often reported relative to BSA to standardise kidney function across different body sizes.

Understanding the Body Surface Area (BSA) Calculator

The Body Surface Area (BSA) Calculator is a helpful tool for medical professionals. BSA is a measurement that is important for various medical applications. This includes determining proper drug dosages and assessing how well organs are functioning. The calculator provides BSA values based on different formulas, ensuring that users can easily find what they need for their patients.

Why is BSA Important?

BSA plays a significant role in healthcare for several reasons:

It helps doctors calculate the right amount of medication for patients, especially in chemotherapy.
BSA is used to assess heart function by comparing cardiac output across different body sizes.
The percentage of burns on a patient's body is assessed using BSA, aiding in treatment decisions.
Kidney function is often evaluated in relation to BSA, ensuring accurate assessments irrespective of body size.

Inputting Patient Information

To use the BSA Calculator, users need to provide specific patient details. This includes height, weight, and information about the patient type and gender. By entering accurate information, the calculator provides a more precise BSA measurement. These details ensure tailored medical assessments and treatments based on individual patient characteristics.

Exploring Different BSA Formulas

The calculator offers multiple formulas to calculate BSA, such as DuBois, Mosteller, and Haycock. Each formula has its strengths, and some may be more suitable for certain patient types. Users can choose to compare all formulas or select a specific one for a detailed analysis. This flexibility helps in making informed decisions based on the context of the patient’s Health needs.

Advanced Features for Professional Use

For those who need more than just basic calculations, the BSA Calculator includes advanced features. Users can specify how many decimal places they want in their results, and compare BSA values using different formulas. This makes it a comprehensive tool for healthcare professionals looking to enhance their practice with accurate data.

Visualising BSA Results

The calculator also provides visual comparisons of the different BSA formulas. This is helpful for understanding how each formula measures BSA differently. With charts and tables, users can see the results side by side, making it easier to decide which formula to use for their patients.

Clinical Applications of BSA

There are many real-world applications for BSA in clinical settings. Some key uses include:

Determining drug dosages, especially in treatments like chemotherapy.
Calculating the cardiac index to better assess heart conditions.
Evaluating the severity of burns and necessary fluid requirements.
Standardising kidney function assessments across various body sizes.

Your Resource for Accurate BSA Calculations

The Body Surface Area Calculator is an essential resource for healthcare professionals. By providing accurate calculations and comparisons, it supports better clinical decision-making. Whether you're measuring a patient's BSA for medication dosing or assessing organ function, this tool simplifies the process and ensures precise care delivery.

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