FFMI assesses muscle mass using weight, body fat percentage and height. Tool supports both English and Metric measurement units. Lean mass calculated as weight divided by body fat percentage. FFMI formula includes height and lean mass calculations
BMI measures body fat using weight and height in kg/m². Formula was developed by Belgian mathematician Adolphe Quetelet in 1830s. WHO considers healthy BMI between 18.5 and 25 for adults
Calculator uses U.S. Navy Method Body fat formula for estimating lean body mass. Different formulas exist for men and women using imperial and SI metrics. Standard error of estimate is approximately ±3.5 percent points
BMI determines weight category based on height and weight measurements. Formula developed by Belgian statistician Adolphe Quetelet 150 years ago. BMI categories: underweight (under 18.5), normal (18.5-24.9), overweight (25-29.9), obese (30+)
BMI can be calculated using metric (kg/m²) or imperial (lb/in²) measurements. Metric method requires multiplying height by itself, then dividing by square. Imperial method needs height squared, then dividing by weight, then multiplying by 703
Home-based health checkup completed in 90 seconds. Tracks muscle mass, fat percentage, and metabolic parameters. Visualizes body in 3D across legs, torso, and arms. Supports up to 8 users simultaneously