About Body Fat Percentage Calculator

Body fat percentage is one of the most meaningful indicators of your overall health and fitness level. Unlike BMI, which only considers height and weight, body fat percentage tells you exactly how much of your body is composed of fat tissue versus lean mass including muscle, bone, and organs. Our free Body Fat Percentage Calculator uses proven measurement-based formulas to give you a reliable estimate in seconds.

The calculator employs the U.S. Navy circumference method, a validated approach that uses simple body measurements — typically neck, waist, and hip circumferences along with your height — to estimate body fat. This method has been shown to correlate well with more expensive laboratory techniques like DEXA scanning, making it an accessible option for anyone who wants to monitor their body composition at home.

How to Use

Select your gender, as body fat formulas differ between men and women
Enter your height and body measurements (neck, waist, and hip circumference)
Click Calculate to see your estimated body fat percentage
Review your result alongside healthy ranges for your gender and age group
Track your progress by remeasuring every two to four weeks under the same conditions

What Your Body Fat Percentage Means

Your result is categorized into ranges such as essential fat, athletic, fitness, acceptable, and obese. Healthy ranges differ by gender: men generally aim for 10 to 20 percent, while women target 18 to 28 percent. Athletes and active individuals often fall below these ranges. Remember that dropping below essential fat levels — roughly 3 percent for men and 12 percent for women — can be dangerous. Use your result as a guide and consult a healthcare professional for a full assessment.

Why Use Body Fat Percentage Calculator?

More accurate health insight than BMI alone
Uses the validated U.S. Navy circumference method
Gender-specific formulas for accurate estimates
Clear categorization with healthy reference ranges
100% free with no registration required
All processing happens locally in your browser for privacy
Mobile-friendly design for convenient at-home tracking

Disclaimer: This calculator provides estimates for educational purposes only and is not a substitute for professional body composition analysis. Consult your healthcare provider for personalized health assessments.