FFMI CalculatorBy Calculator / April 12, 2025 FFMI Calculator (US Units) FFMI Calculator (US Units) Height (Feet) Select feet 4 ft 5 ft 6 ft 7 ft Height (Inches) Select inches 0 in 1 in 2 in 3 in 4 in 5 in 6 in 7 in 8 in 9 in 10 in 11 in Weight (lbs) Body Fat Percentage (%) Calculate FFMI Your FFMI Result — 16 (Low) 18 20 22 24 (High)