As a developer who started lifting seriously two years ago, I kept running into the same problem: to understand my body composition, I needed to visit 5 different sites.
One for BMI. Another for BMR. A third for TDEE. A fourth for ideal weight. A Navy body fat calculator on some .edu domain from 2007.
Each one asked for the same inputs — height, weight, age, measurements — and each gave me back a single number with zero context. None of them explained what the number meant or how it related to the others.
So over a weekend, I built bodycalctool.com — a single page that takes your stats once and outputs everything: BMI, BMR (3 formulas), TDEE, ideal weight (5 formulas), and Navy body fat percentage. No signup, no paywall, no tracking beyond basic analytics.
The Stack
