Body Fat Calculator
Calculate your body fat percentage using multiple methods. Get insights into your body composition and track your fitness progress with accurate measurements.
Body Fat Calculator
Body Composition Results
Body Fat Categories
Men
Women
How to Use This Calculator
Step-by-Step Guide
- 1. Choose your calculation method
- 2. Select your gender
- 3. Enter your age, weight, and height
- 4. For Navy method, add waist and neck measurements
- 5. For women using Navy method, add hip measurement
- 6. Click "Calculate Body Fat" to see results
Measurement Tips
- • Measure at the same time of day
- • Use a flexible measuring tape
- • Measure waist at the narrowest point
- • Measure neck below the Adam's apple
- • Measure hips at the widest point
- • Take measurements in the morning
Frequently Asked Questions
Which method is most accurate?
The US Navy method is generally more accurate than BMI-based calculations as it uses actual body measurements. However, DEXA scans and hydrostatic weighing are the most accurate methods available.
What's a healthy body fat percentage?
For men, 10-20% is generally considered healthy, while for women, 16-24% is healthy. Athletes typically have lower percentages, while essential fat is the minimum needed for health.
How often should I measure body fat?
Measure every 2-4 weeks to track progress. Daily measurements aren't recommended as body fat percentage can fluctuate due to hydration, food intake, and other factors.
Can I reduce body fat percentage?
Yes, through a combination of strength training to build muscle, cardiovascular exercise to burn calories, and a balanced diet with a moderate calorie deficit.
How the Body Fat calculator works
This free body fat calculator runs entirely in your browser using standard mathematical formulas. Enter your figures, tap Calculate, and results update instantly — no signup required.
Figures are estimates for general information. Always verify important decisions with a qualified professional where relevant.
- Input your values using the fields above (numeric keypad on mobile).
- Results use precise floating-point arithmetic rounded for display.
- Refresh or change inputs and recalculate anytime.
Worked example
- Choose typical values for a common body fat scenario.
- Enter those values in the calculator fields above.
- Tap Calculate and compare the on-screen result with the expected formula outcome.
- Adjust one input at a time to see how the result changes.