Body Fat (YMCA) Calculator
How much of my weight is fat (using the YMCA formula)?
This calculator uses the formula developed by the YMCA to estimate your body fat percentage without calipers. Use a tape measure and enter your waist measurement. Combine the waist measurement with your gender and weight and this calculator will estimate your percent of body fat, how much of your weight is lean mass and how much is fat mass, and your general fitness category. The water displacement test is the most accurate way to determine body fat percent, but the Navy Body Fat test or YMCA formula is accurate within 1-3% for most people.
TitleA title for these calculator results that will help you identify it if you have printed out several versions of the calculator.
US/MetricChoose US or Metric units.
GenderSelect your gender.
WeightYour current scale weight.
Waist (at navel)Your waist measurement at the navel (or belly button).
Body FatThe approximate percentage of your body's mass that is made up of fat.
Fat MassThe portion of your weight that is fat.
Lean MassThe portion of your weight that is lean (not fat).
Body Fat CategoryYour body fat category depends on your gender and your body fat percentage.
Body Fat Categories TableThis table shows you the Body Fat Range for each Classification so you can see how close your calculated Body Fat percentage is to the next Body Fat Classification range.