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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.

Input Fields:
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.
Waist (at navel) Your waist measurement at the navel (or belly button).

Output Fields:
Body Fat The approximate percentage of your body's mass that is made up of fat.
Fat Mass The portion of your weight that is fat.
Lean Mass The portion of your weight that is lean (not fat).
Body Fat Category Your body fat category depends on your gender and your body fat percentage.
Body Fat Categories Table This 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.

Buttons and Checkboxes:
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All calculators are made available as self-help tools for your independent use with results based on information provided by the user. All examples are hypothetical and are for illustrative purposes only. Calculated results are believed to be accurate but results are not guaranteed. Exercise, Fitness, Health, and Weight Loss calculators are not for providing medical advice and should not be used as a substitute for advice from a medical professional. Users are advised to check with a physician before undertaking any strenuous exercise or diet plan.
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Updated 04 Jul 2007