Body Fat Percentage Calculator
Calculate your body fat percentage using multiple methods including Navy method, skinfold calipers, and body measurements. Track lean mass and fat mass over time.
3 minutes Easy
How to Use This Calculator
- Select your measurement system (Imperial or Metric)
- Enter your age, gender, height, and weight
- Choose your calculation method (Navy, 3-site, or 7-site)
- Input required body measurements based on selected method
- Click Calculate to see your body fat percentage and composition
- Share or bookmark your results - the URL automatically saves all inputs!
Measurement System
Basic Information
years
Height & Weight
ft
in
lbs
Calculation Method
Navy method uses body measurements, skinfold methods require calipers
💪 Understanding Body Fat Percentage
Body fat percentage is the proportion of fat tissue in your body compared to total body mass. It's a better indicator of fitness and health than weight alone, as it accounts for muscle mass and body composition.
📊 Body Fat Categories
| Category | Men | Women |
|---|---|---|
| Essential | 2-5% | 10-13% |
| Athletes | 6-13% | 14-20% |
| Fitness | 14-17% | 21-24% |
| Average | 18-24% | 25-31% |
| Obese | 25%+ | 32%+ |
🎯 Which Method to Use?
- Navy Method: Good for home use, no special equipment needed, accurate within 3-4%
- 3-Site Skinfold: More accurate than Navy, requires calipers, good for tracking changes
- 7-Site Skinfold: Most accurate method available here, professional standard, requires experience
For best results, take measurements at the same time of day and have the same person take them each time.
🔗 Save & Share Your Calculation
Your body composition data is automatically saved in the URL. You can bookmark this page to track progress over time, or use the Share button to send it to your trainer or friends. All values are restored when you return!
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