FFMI Calculator — Free Fat-Free Mass Index Calculator

FFMI calculator for lifters — free fat-free mass index with muscle-building verdict. INTRODUCTION Measure your muscularity with Trencada's free FFMI calculator. Enter height, weight and body fat % to get your normalized fat-free mass index, lean mass and fat mass, plus a scale showing where you stand — from below average to elite. Runs entirely in your browser — no signup needed. HOW TO USE 1. Enter your height in cm, weight in kg, and body fat percentage. 2. Select your sex, then click Calculate FFMI. 3. Your normalized FFMI, lean mass and fat mass appear, with a scale showing where you stand. 4. Body fat % is the trickiest input — use calipers, a smart scale or a DEXA scan for best accuracy. KEY FEATURES - Normalized FFMI (height-corrected to 1.8 m). - Lean mass and fat mass breakdown. - Male and female reference ranges. - Visual muscularity scale with verdict. - 100% client-side — nothing uploaded or stored. WHY CHOOSE TRENCADA No signup, no paywall, no app. The FFMI calculator works entirely in your browser and gives lifters the single best natural-potential metric — fast and free. FAQ 1. Is the FFMI calculator really free? Yes — unlimited calculations, free forever, no account needed. 2. What is a good FFMI? Around 20–22 is athletic for men; 23–25 approaches the natural limit. 3. Why normalize to 1.8 m? Taller lifters get inflated raw scores — normalization keeps comparisons fair. 4. Is this medical advice? No — an educational estimate; consult a professional for health decisions.