Free Tool
Body Surface Area Calculator | Body Surface Area
Calculate body surface area (BSA) using the Du Bois formula
Built by an engineer who chases finish lines and is obsessed with data. Thomas Prommer — technology executive who has worked with Google, Apple, Nike, Adidas, Netflix and other global brands. Also an Ironman finisher, HYROX Pro Division competitor, and marathon runner. These tools combine engineering rigor with real race experience.
Body Surface Area Calculator
Calculate body surface area (BSA) using the Du Bois formula
Methodology
BSA = 0.007184 × height^0.725 × weight^0.425 (Du Bois)
FAQ
What is Body Surface Area?
Calculate body surface area (BSA) using the Du Bois formula.
How is it calculated?
BSA = 0.007184 × height^0.725 × weight^0.425 (Du Bois)
How accurate is this?
This provides a reasonable estimate. Professional measurement recommended for clinical use.
Who should use this?
Athletes, fitness enthusiasts, and anyone tracking body composition.