Advanced Body Fat Calculator — Navy + BMI

Advanced Body Fat Calculator

U.S. Navy and BMI (Deurenberg) methods with live charts and tips. No default zeros.

Your Body Composition

Choose a method, enter measurements, and see results instantly.

Units

Method

Sex

Override BMI sex factor

BMI method uses 1 for male, 0 for female, 0.5 for other by default.

Age

Required for BMI method.

Weight

Used for mass and BMI calculations.

Height cm or ft/in

Plausible height range: 120–230 cm (approx).

Measurements (tape) Navy method

Ensure tape is snug, level, and not compressing skin.

Estimates only; measurement accuracy affects results. For health decisions, consult a professional.

Awaiting inputs

Body Fat %: —

Category: —

Fat Mass: —

Lean Body Mass: —

WHtR: —

WHR: —

Enter height, weight, and required measurements to calculate.

Body Fat % —

WHtR —

Tip: Aim to keep WHtR below ~0.5 for lower risk.

Fat Mass: —%

Lean Mass: —%

Categories (ACE): Essential • Athletes • Fitness • Acceptable • Obese. Ranges vary by sex; use as guidance only.