Free Online Tools
A growing collection of free, browser-based calculators built by TecDit. No sign-up, no downloads, just fast, accurate tools you can use instantly.
Body Surface Area (BSA) Calculator
Calculate body surface area using 9 formulas, including Mosteller, Du Bois, and Haycock, with metric and imperial unit support.
US Navy Body Fat Calculator
Estimate body fat percentage from tape measurements using the US Navy method, with standards and category charts for men and women.