About MacroMath

MacroMath is a collection of free fitness calculators built on peer-reviewed formulas. No account required, no personal data stored. All calculations happen in your browser.

Formulas used: Mifflin-St Jeor (TDEE/BMR), Harris-Benedict (BMR), Katch-McArdle (BMR), US Navy (body fat), Epley/Brzycki/Lombardi (1RM), Wilks coefficients (powerlifting), Rockport/Cooper/RHR (VO2 max), Hamwi/Devine/Robinson (ideal weight).

Results are for informational purposes only. Consult a qualified health professional before making changes to your diet or training programme.