Body Fat Percentage Calculator
Calculate your body fat percentage using the US Navy method. Quick, easy, and provides insights into body composition.
About this calculator
The Body Fat Percentage Calculator estimates your body's fat content using the US Navy method, a common and reasonably accurate field test. It's for anyone interested in understanding their body composition beyond just weight, as two people with the same weight can have vastly different body fat levels. This calculator is particularly useful for tracking progress during weight loss or muscle gain journeys.
To use it, you'll need a measuring tape to gather circumferences of specific body parts (neck, waist, hip for women, neck and waist for men). Once you have your measurements and know your height, input them into the calculator. The result will give you an estimated body fat percentage.
How to use the result:
- Health Indicator: High body fat can be linked to health risks like heart disease and diabetes. Lowering it can improve overall health.
- Fitness Goal Setting: Athletes often aim for lower body fat for performance. Non-athletes might target a healthy range for general well-being.
- Progress Tracking: Regularly using the calculator (e.g., monthly) can help you monitor changes in your body composition over time, indicating the effectiveness of your diet and exercise plan. Remember, small changes are normal, and consistency is key.
Formula
men
Body Fat (%) = 495 / (1.0324 - 0.19077 * log10(waist - neck) + 0.15456 * log10(height)) - 450
women
Body Fat (%) = 495 / (1.29579 - 0.35004 * log10(waist + hip - neck) + 0.22100 * log10(height)) - 450
Source: U.S. Department of Defense
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Body Fat Percentage Calculator FAQs
What is a healthy body fat percentage?
For men, a healthy range is typically 10-20%. For women, it's generally 18-28%. These ranges can vary based on age, genetics, and activity level.
How accurate is the US Navy body fat method?
The US Navy method is a practical and widely used estimation method. While not as precise as DEXA scans or hydrostatic weighing, it provides a reasonably good estimate for general tracking and is more accessible.
Can I use this calculator to track my progress?
Yes, it's an excellent tool for tracking progress! Ensure you take measurements consistently (e.g., same time of day, similar conditions) for the most accurate comparison over time.