Estimateur de Composition Corporelle par Bioimpédance Gratuit

Estimez votre masse grasse, masse maigre et masse musculaire à partir d'une mesure de bioimpédance.

lbs
%
inches

Fat Mass

39.6 lbs

Lean Mass140.4 lbs
Estimated Muscle Mass77.2 lbs
Estimated Body Water56.9 %

Fat Mass vs Body Weight

Voir la formule →

Formule

Understanding BIA (Bioelectrical Impedance Analysis)

BIA scales send a small electrical current through your body. Fat tissue conducts less electricity than lean tissue, allowing the device to estimate body composition.

From BIA Body Fat % We Can Derive

  • Fat Mass = Weight x Body Fat %
  • Lean Mass = Weight x (1 - Body Fat %)
  • Muscle Mass ~ Lean Mass x 0.55 (skeletal muscle is about 55% of lean mass)
  • Body Water ~ Lean Mass is about 73% water

    • Exemple Résolu

    A 180 lb male at 22% body fat per BIA scale.

    1. 01Fat mass = 180 x 0.22 = 39.6 lbs
    2. 02Lean mass = 180 x 0.78 = 140.4 lbs
    3. 03Est muscle = 140.4 x 0.55 = 77.2 lbs
    4. 04Est water = 0.78 x 73 = 56.9%

    Questions Fréquentes

    How accurate are BIA scales?

    Consumer BIA scales can be off by 3-8% for body fat. They are most useful for tracking trends over time rather than absolute accuracy.

    What affects BIA accuracy?

    Hydration level, recent exercise, meals, and time of day all affect readings. Measure at the same time under the same conditions for best comparisons.

    Is BIA better than BMI?

    BIA provides more information than BMI because it distinguishes between fat and lean tissue. However, neither is as accurate as DEXA scanning.

    Apprendre

    Understanding BMI: What It Means and How to Calculate It

    Calculatrices Associées

    Body Fat (Navy)

    Navy body fat method.

    Lean Body Mass

    Calculate lean body mass.

    Body Water

    Estimate body water percentage.