I built a body health calculator suite because BMI is terrible

BMI was invented in the 1830s by a mathematician studying population averages. It doesn't distinguish muscle from fat and labels most athletes "overweight."

So I built bodycalctool.com — 5 calculators that actually tell you something useful:

• Body Fat % (US Navy method, validated against DEXA, measurable with $2 tape measure)
• TDEE (Mifflin-St Jeor with concrete activity level examples)
• Waist-to-Hip Ratio (better cardiovascular risk predictor than BMI)
• Ideal Weight (4 formulas for a realistic range, not one BS number)
• Protein Intake (0.8-2.2g/kg based on activity and goal)

Stack: vanilla HTML/JS/CSS, client-side compute, zero data collection. No signup, no ads.

Would love feedback on what other calculators people want. Considering a macro splitter and 1RM calculator next.

→ bodycalctool.com