Body Surface Area (BSA) Calculator
Calculate your Body Surface Area (BSA) using multiple medical formulas. Accurately determine BSA for medication dosing, medical treatments, and health research.
Select the formula that best suits your needs. Du Bois is most commonly used in clinical settings.
Fitbit Charge 5 Advanced Fitness & Health Tracker
RENPHO Smart Scale for Body Weight
Niceday Elliptical Machine
Garmin Forerunner 255 GPS Running Watch
Whey Protein Isolate by Optimum Nutrition
Theragun Pro Massage Gun
How It Works
What is Body Surface Area (BSA)?
Body Surface Area (BSA) is the calculated surface area of the human body and is an important medical metric. It is used to determine dosages for medications, especially in cancer treatment and organ transplants.
How BSA is Calculated?
There are several formulas for calculating BSA:
- Du Bois Formula: Most commonly used in clinical settings.
- Mosteller Formula: Simplified for quick calculations.
- Haycock and Gehan: Suitable for pediatric or specific patient types.
- Boyd: Another alternative formula used in some clinical settings.
Each formula factors in height and weight to determine your total body area in square meters (m²).
Why BSA Matters in Healthcare
BSA helps medical professionals determine:
- Accurate drug dosages
- Appropriate medical treatments
- Nutritional assessments
- Fluid requirements in intensive care
FAQ Section
What is a normal BSA for adults?
Adult BSA typically ranges from 1.6 to 1.9 m², depending on weight and height. Men generally have a higher BSA than women due to differences in average height and weight.
Which formula is most accurate?
Du Bois is the most widely accepted formula in clinical practice, but you can choose the formula best suited to your situation. Mosteller is often preferred for its simplicity, while Haycock may be better for children.
Is this calculator suitable for children?
Yes, formulas like Haycock or Gehan are often used for pediatric patients. The Haycock formula in particular was developed with data that included children.
Can I use this for medication dosing?
This calculator is for general estimation. Always consult a medical professional before using it for medical decisions. Many medications require BSA-based dosing, but professional medical guidance is essential.
Related Tools
Withings Body+ Smart Scale
Related Tools
BMI Calculator
Calculate your Body Mass Index based on your height and weight
Body Fat Calculator
Estimate your body fat percentage based on physical measurements
Calorie Calculator
Calculate your daily calorie needs and macronutrient distribution
Islamic Home Finance Calculator
Calculate payments for Sharia-compliant home financing using Murabaha or Diminishing Musharaka principles