bsa - body surface area calculator
This bsa calculator is a professional body surface area calculator that estimates total skin area from height and weight. It applies the standard bsa formula to give accurate bsa calculation results and functions as a fast bsa calc to calculate bsa with selectable precision. Use it for medication dosing, clinical assessments, or personal health tracking.
Input Parameters
Enter height value, supports centimeters or meters as units
Enter weight value, supports kilograms or pounds as units
Calculation Results
bsa and body surface area calculator formula & calculation guide
About bsa and body surface area calculator
Body Surface Area (BSA) is the total external surface area of the human body, expressed in square meters. In clinical practice, what is bsa medical term refers to this calculated area used for drug dosing, fluid management, and physiological assessment. The bsa meaning medical professionals rely on helps standardize treatments such as chemotherapy, burn resuscitation, and renal function evaluation. This bsa calculator provides a practical body surface area calculator that returns results instantly from height and weight.
- Dosage calculation for chemotherapy and other medications
- Determining fluid resuscitation in burn patients
- Assessing renal and hepatic function
- Calculating cardiac output and metabolic rate
bsa formula and body surface area calculator knowledge
Du Bois bsa formula (1916)
BSA = 0.007184 × H⁰·⁷²⁵ × W⁰·⁴²⁵
Haycock bsa formula (1978)
BSA = 0.024265 × H⁰·³⁹⁶⁴ × W⁰·⁵³⁷⁸
Gehan & George bsa formula (1970)
BSA = 0.0235 × H⁰·⁴²²⁴⁶ × W⁰·⁵¹⁴⁵⁶
Boyd bsa formula (1935)
BSA = 0.0003207 × H⁰·³ × (1000×W)⁰·⁷²⁸⁵⁻⁰·⁰¹⁸⁸×log₁₀(W)
Unit conversion for bsa calculation
Centimeters to Meters: meters = centimeters ÷ 100
Pounds to Kilograms: kilograms = pounds × 0.453592
Important considerations for body surface area calculator
- Different bsa formula choices yield slightly different results (±5%)
- For pediatric bsa calculation, the Haycock formula is recommended
- This body surface area calculator provides estimates only
- Mosteller bsa is another accepted method in some clinical settings
How to use this bsa calculator and calculate bsa step by step
- Enter your height and weight using the available unit selectors
- Choose a bsa formula such as Du Bois, Haycock, Gehan & George, or Boyd
- Click Calculate BSA to run the bsa calculation and view the result
- Review the detailed bsa calc process and the BMI output
bsa FAQ
what is bsa medical term?
The term bsa medical abbreviation stands for body surface area. It is used in medicine to express the total external area of the body in square meters. Knowing what is bsa medical term helps clinicians normalize physiological measurements and drug doses across patients of different sizes.
what is bsa?
BSA, or body surface area, is a calculated estimate of the skin surface. Unlike BMI, which relates weight to height squared, a body surface area calculator provides a direct area value. This measurement is widely used in cardiology, oncology, and nephrology to adjust treatments and interpret test results.
how to calculate bsa?
To calculate bsa manually, choose a validated bsa equation such as Du Bois, Haycock, Gehan & George, or Boyd. Insert height in centimeters and weight in kilograms into the formula, then solve the exponent terms. This bsa calculator automates the process and shows every bsa calculation step so you can verify the result.
what is bsa equation?
A bsa equation is a mathematical expression that estimates body surface area from height and weight. Common examples include the Du Bois formula, Haycock formula, Gehan & George formula, and Boyd formula. Each bsa equation uses different constants and exponents, so results may vary slightly depending on patient population and clinical context.
what is bsa meaning medical?
The bsa meaning medical context refers to the use of body surface area as a standardized index for physiological functions. It helps adjust cardiac output, glomerular filtration rate, and drug clearance to a patient's size. A reliable body surface area calculator supports these clinical calculations by providing quick and repeatable BSA values.