Paediatric Body Surface Area Calculator

BSA Formula (Haycock):

\[ BSA = 0.024265 \times W^{0.5378} \times H^{0.3964} \]

Body Surface Area (m²):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Paediatric Body Surface Area?

Definition: Body Surface Area (BSA) is the measured or calculated surface area of the human body, used in many medical calculations.

Purpose: BSA is important for determining medication dosages, chemotherapy regimens, and other medical treatments in children.

2. How Does the Calculator Work?

The calculator uses the Haycock formula:

\[ BSA = 0.024265 \times W^{0.5378} \times H^{0.3964} \]

Where:

\( BSA \) — Body Surface Area (square meters)
\( W \) — Weight (kilograms)
\( H \) — Height (centimeters)

Explanation: The Haycock formula is specifically designed for paediatric patients and provides accurate BSA estimates for children.

3. Importance of BSA Calculation

Details: Accurate BSA calculation is crucial for proper drug dosing, fluid management, and nutritional support in paediatric patients.

4. Using the Calculator

Tips: Enter the child's weight in kilograms and height in centimeters. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why use Haycock formula for children?
A: The Haycock formula was specifically developed for paediatric populations and is more accurate for children than adult formulas.

Q2: What age range is this calculator suitable for?
A: This calculator is appropriate for children from newborns up to 18 years.

Q3: How accurate is this calculation?
A: The Haycock formula has been validated in paediatric populations and provides clinically acceptable accuracy.

Q4: Should I round the BSA result?
A: For clinical purposes, BSA is typically rounded to 2 decimal places (e.g., 0.75 m²).

Q5: Can I use this for premature infants?
A: For very premature or low birth weight infants, consult specific neonatal references as adjustments may be needed.