FFMI Check
The fitness calculators serious lifters actually use
What is FFMI Check?
Most fitness calculators online are either bloated with ads, hidden behind sign-ups, or built on outdated formulas like BMI. FFMI Check is a single-page hub for the four metrics serious lifters actually track: FFMI + Normalized FFMI (Kouri 1995), TDEE (Mifflin-St Jeor), daily macros, and 1RM (Epley + Brzycki averaged). Mobile-first, zero accounts, zero data stored — every calculation runs locally in your browser.
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