Body Fat Calculator
Calculate your body fat percentage using proven methods including the US Navy formula and BMI-based estimation. Get detailed body composition analysis with health recommendations.
Body Fat Calculator
Enter your measurements to calculate body fat percentage using multiple methods
Navy Method Measurements
Measure at the narrowest point
Measure below the Adam's apple
Body Fat Categories
Men
Women
Calculation Methods
US Navy Method
More accurate, uses body measurements. Developed by the U.S. Navy for military personnel assessment.
BMI-based Method
Less accurate, uses height, weight, and age. Quick estimation using the Deurenberg formula.
Measurement Tips
Frequently Asked Questions
How accurate is the US Navy body fat calculation?
The US Navy method is considered one of the most accurate non-invasive body fat measurement techniques, with accuracy within 3-4% when measurements are taken correctly. It's more reliable than BMI for assessing body composition.
What's the difference between the Navy method and BMI method?
The Navy method uses actual body measurements (waist, neck, hip) to calculate body fat, making it more accurate. The BMI method is a quick estimation based on height, weight, and age, but doesn't account for muscle mass or body composition.
Why do women need hip measurements but men don't?
Women typically store more fat in the hip and thigh areas due to hormonal differences. The hip measurement helps account for this natural fat distribution pattern, making the calculation more accurate for women.
What's considered a healthy body fat percentage?
For men, 14-17% is considered fitness level, while 18-24% is acceptable. For women, 21-24% is fitness level, and 25-31% is acceptable. Essential fat levels are 2-5% for men and 10-13% for women.
How often should I measure my body fat percentage?
For tracking fitness progress, measure monthly or bi-weekly. Daily fluctuations can occur due to hydration, food intake, and time of day. Always measure under similar conditions for consistency.
Related Health Tools
Medical Disclaimer
This body fat calculator is for informational purposes only and should not replace professional medical advice. Results may vary based on individual factors. Consult with a healthcare provider or certified fitness professional for personalized health and fitness guidance, especially if you have medical conditions or concerns.