How much of my weight is lean mass and how much is fat?
Get an estimate of your body’s lean mass by entering your height and weight. This calculator uses the James formula which applies to adults and children of all ages. Your lean body mass is the sum of all your nonfat parts including muscle, tissue, organs, blood, and water. Don’t confuse lean body mass with ideal weight – essential fat is 10% for women and 2% for men, and acceptable fat is up to 31% for women and 25% for men.
Title: A title for these calculator results that will help you identify it if you have printed out several versions of the calculator.
US/Metric: Choose US or Metric units.
Gender: Select your gender.
Weight: Your current scale weight.
Height: Your height. Use feet (ft) and inches (in) if units is US or centimeters (cm) if units is Metric.
Lean Mass: The portion of your weight that is lean (not fat).
Fat Mass: The portion of your weight that is fat.