Body Fat
Estimate body-fat percentage from circumference measurements.
Body Composition Calculators
Estimate body composition, review common weight measures, and calculate resting energy needs.
Body Composition
Lean Body Mass
Calculate estimated lean mass and fat mass.
FFMI
Calculate fat-free mass index and normalized FFMI.
Weight
BMI
Calculate body mass index from height and weight.
Energy
BMR
Estimate basal metabolic rate.
Using these tools
No single body-composition measure tells the whole story. Use consistent measurements and look at trends over time. BMI, circumference estimates, lean body mass, and FFMI provide different kinds of context and are not substitutes for clinical assessment.