Health

Body Fat Calculator

Estimate body fat percentage using tape measurements (US Navy), a BMI-based estimate, or skinfold formulas. See fat mass, lean mass, category ranges, and a target weight for a goal body fat percentage.

Body Fat % Fat & Lean Mass Multiple Methods Goal Planning

Body Fat Percentage, Fat Mass, Lean Mass & Goal Estimator

Choose a method, enter measurements, and get a structured estimate plus planning outputs.

Tape-method estimates are highly sensitive to measurement technique. Measure on bare skin or a thin layer, keep the tape level, and use the same method each time for better tracking.
BMI-based body fat estimates are convenient for quick context, but they can be inaccurate for very muscular, very lean, or older individuals. If precision matters, use skinfolds, tape measurements, or a clinical measurement method.
Skinfold calculations can be strong for tracking when technique is consistent. Use the same caliper, the same sites, and similar conditions. If possible, take 2–3 readings per site and average them.
Goal calculations assume body fat percentage estimates are reasonably accurate and that lean mass is stable (or changes slightly if you choose the conservative setting). Real outcomes vary with training, protein intake, sleep, and genetics.