Body Fat Calculator
Calculate your body fat percentage using different methods and learn what it means for your health.
Quick Examples
About This Calculator
How the Body Fat Calculator Works
This calculator uses several different methods to estimate body fat percentage. Each method has its own advantages and limitations.
Navy Method
The Navy Method uses body circumference measurements to estimate body fat percentage. It's widely used by the US Navy and is considered one of the most accurate non-invasive methods available without specialized equipment.
- For men, it uses neck, waist, and height measurements
- For women, it uses neck, waist, hip, and height measurements
- Generally accurate within 3-4% of underwater weighing
BMI Method
The BMI Method estimates body fat percentage based on your Body Mass Index, age, and gender. While less accurate than other methods, it provides a quick approximation based on population averages.
- Requires only height, weight, age, and gender
- Less accurate for athletes and very muscular individuals
- Useful for general population screening
Skinfold Method
The Skinfold Method uses measurements of skinfold thickness at various sites on the body. This method requires proper technique but can be quite accurate when performed correctly.
- Uses measurements from multiple body sites
- More accurate than BMI for athletic individuals
- Requires proper measurement technique
Understanding Your Results
Body fat percentage is categorized into different fitness levels, with different healthy ranges for men and women:
| Category | Men | Women |
|---|---|---|
| Essential Fat | 3-5% | 10-13% |
| Athletic | 6-13% | 14-20% |
| Fitness | 14-17% | 21-24% |
| Average | 18-24% | 25-31% |
| Obese | 25%+ | 32%+ |
Using Your Results
Body fat percentage is just one health indicator. For a complete health assessment, consult with healthcare professionals. Your results can help you:
- Set realistic fitness goals based on your current body composition
- Track changes in your body composition over time
- Assess the effectiveness of your diet and exercise program
- Make more informed decisions about your health and fitness
Frequently Asked Questions
What is body fat percentage?
Body fat percentage is the amount of fat tissue in your body compared to everything else (muscle, bones, organs, water, etc.). It's expressed as a percentage of your total body weight.
How accurate is this calculator?
The Navy Method used in this calculator is generally accurate within 3-4% of underwater weighing measurements, which is considered the gold standard. The BMI method is less accurate but provides a useful estimate.
What is a healthy body fat percentage?
Healthy body fat percentages vary by gender and age. For men, 10-20% is generally considered healthy, while for women, 18-28% is the healthy range. Athletes typically have lower percentages.
How can I reduce my body fat percentage?
Reducing body fat percentage typically involves a combination of regular exercise (both cardio and strength training) and a calorie-controlled diet. Focus on creating a small calorie deficit, consuming plenty of protein, and staying consistent with your exercise routine.
How often should I measure my body fat?
For tracking purposes, measuring once every 2-4 weeks is sufficient. Body fat percentage changes slowly, and daily measurements can be affected by water retention and other factors that don't reflect actual fat loss or gain.