Body Fat Calculator
Calculate your body fat percentage using the Navy method or BMI-based estimation
Body Measurements
Quick Examples
Enter Your Measurements
Select a calculation method, enter your body measurements, and get your estimated body fat percentage.
Your Results
Method used: -
Body Fat Categories
Ranges shown are general guidelines. Actual healthy ranges vary by individual and should be discussed with a healthcare provider.
About Body Fat Calculation
U.S. Navy Method
The U.S. Navy method uses circumference measurements (waist, neck, and hip for women) to estimate body fat percentage. It is a practical field method commonly used in military and fitness settings.
BMI-Based Method
The BMI-based method uses your Body Mass Index along with age and sex to estimate body fat. While convenient, it is less accurate than the Navy method for athletic or muscular individuals.
Limitations
Both methods are estimates and can be affected by factors like muscle mass, bone density, and body shape. For the most accurate body composition analysis, consider DEXA scans or hydrostatic weighing.
Body Fat Calculator FAQ
Which method is more accurate?
The U.S. Navy method is generally more accurate than the BMI-based method because it uses actual body circumference measurements. However, both are estimates and less precise than clinical methods like DEXA scans.
What is a healthy body fat percentage?
For men, a healthy range is typically 14-17% (fitness level) to 18-24% (acceptable). For women, 21-24% (fitness) to 25-31% (acceptable). Essential fat levels (2-5% men, 10-13% women) are the minimum needed for basic physiological function.
How do I measure my waist and neck correctly?
Measure your waist at the navel level, standing relaxed. Measure your neck just below the larynx (Adam's apple) with the tape sloping slightly downward at the front. For women, measure hips at the widest point. Use a flexible tape measure and keep it snug but not tight.
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