Body Surface Area (BSA) is a critical metric used in physiology and medicine, often preferred over body weight for calculating chemotherapy dosages and cardiac index. Our calculator instantly computes your BSA using the four most scientifically validated formulas, providing a comprehensive range of estimates.
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Body Surface Area Calculator
Calculate your total body surface area (BSA) using 4 different formulas (Du Bois, Mosteller, etc.) for medical and fitness purposes.
Your Stats
About BSA
Body Surface Area (BSA) is the total surface area of the human body. It is often used in medicine to calculate drug dosages and to assess burn severity. The Mosteller formula is the most commonly used due to its simplicity.
Calculated BSA
Average Estimate
1.909m²
(Based on Mosteller formula)
Du Bois Formula
Result1.903 m²
Haycock Formula
Result1.917 m²
Gehan & George
Result1.921 m²
Mosteller Formula
Result1.909 m²
Calculate Your Body Surface Area (BSA)
Calculate your Body Surface Area (BSA) using the 4 most accurate formulas: Du Bois, Mosteller, Haycock, and Gehan & George. Essential for medical dosages.
1
Enter Height
Input your height in centimeters, inches, or feet.
2
Enter Weight
Input your weight in kilograms or pounds.
3
View Results
See your BSA calculated across all major medical formulas instantly.
Key Features
4-Formula Precision
Calculates results using Du Bois, Mosteller, Haycock, and Gehan & George formulas simultaneously.
Medical Grade Accuracy
Provides the specific measurements used by healthcare professionals for dosage calculations.
Smart Unit Conversion
Seamlessly switch between Metric (cm/kg) and Imperial (ft/lbs) units.
Frequently Asked Questions
Different formulas were developed based on different population samples. The Mosteller formula is most commonly used today due to its simplicity and accuracy.
Average BSA is generally 1.9 m² for men and 1.6 m² for women, but this varies significantly with height and weight.
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