Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy, Army, or BMI-based methods. Get insights into your body composition including fat mass and lean mass.
Body Measurements
Measure below the Adam's apple
Measure at navel level
Body Fat Percentage
Fitness
Fat Mass
29.6 lbs
Lean Mass
140.4 lbs
Fitness
Lean and fit appearance with visible muscle definition
Typical range for men: 14-17%
| Category | Men | Women |
|---|---|---|
| Essential Fat | 2-5% | 10-13% |
| Athletes | 6-13% | 14-20% |
| Fitness | 14-17% | 21-24% |
| Average | 18-24% | 25-31% |
| Obese | 25%+ | 32%+ |
Understanding Body Fat Percentage
Body fat percentage is a more accurate indicator of health than weight or BMI alone. It measures the proportion of fat tissue in your body compared to lean mass (muscles, bones, organs).
Knowing your body fat helps you track fitness progress, set realistic goals, and understand your daily calorie needs more accurately since muscle burns more calories than fat at rest.
Measurement Methods Explained
U.S. Navy Method
Uses neck and waist measurements (plus hip for women). Developed by the U.S. Navy for fitness standards. Accuracy: ±3-4%.
U.S. Army Method
Similar to Navy method with slightly different formulas. Used for military body composition assessments. Accuracy: ±3-4%.
BMI-Based Estimate
Uses age, gender, and BMI to estimate body fat. Less accurate but requires no measurements. Best for quick estimates.
How to Take Accurate Measurements
Neck
Measure just below the Adam's apple (larynx). Keep the tape level and snug.
Waist
Measure at navel (belly button) level while standing relaxed. Don't suck in your stomach.
Hips (Women Only)
Measure at the widest point of your hips/buttocks while standing with feet together.
Frequently Asked Questions
What is a healthy body fat percentage?
For men, 14-24% is average and healthy. For women, 21-31% is the acceptable range. Athletes typically have lower body fat (6-13% for men, 14-20% for women). Calculate your BMI alongside body fat for a complete picture.
Why is body fat percentage better than BMI?
BMI doesn't distinguish between fat and muscle. A muscular person might have a high BMI but low body fat. Body fat percentage gives a more accurate picture of health and fitness level.
How can I reduce body fat?
Create a moderate calorie deficit using our TDEE calculator, focus on protein intake, and combine cardio with strength training. Track your calories burned during exercise.
Is Body Fat calculator accurate?
Yes, our Body Fat calculator is accurate. It uses scientifically validated formulas including the U.S. Navy and U.S. Army methods. Our in-house team of nutritionists and developers verify all calculations for accuracy.
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Learn more about body composition measurement on Wikipedia