Body Fat CalculatorEstimate Your Body Fat Percentage
Calculate your body fat percentage using the US Navy method. Track your fitness progress and understand your body composition.
📏 How to Measure
- • Neck: Measure just below the Adam's apple
- • Waist: Measure at navel level (belly button)
- • Hip: Measure at the widest part (women only)
What is the Body Fat Calculator Tool?
The Body Fat Calculatoruses the US Navy method to estimate your body fat percentage. By taking simple circumference measurements, you can track your body composition and fitness progress.
All calculations happen locally in your browser — your data never leaves your device, ensuring complete privacy.
How It Works
Enter Measurements
Age, height, neck, waist, hip
Select Gender
Male or Female
Calculate
US Navy method formula
View Results
Body fat % and category
Frequently Asked Questions
Is the body fat calculator really free?
Yes! Attachad's body fat calculator is completely free with no limits or hidden fees.
What is the US Navy method?
The US Navy method uses circumference measurements (neck, waist, hips) to estimate body fat percentage. It's a widely used and validated method.
What is a healthy body fat percentage?
For men, 10-20% is considered healthy. For women, 20-30% is considered healthy. Athletes typically have lower percentages.
Is my data stored?
No, all calculations happen locally in your browser. Your data never leaves your device.
How accurate is this method?
The US Navy method is considered accurate within 3-4% of actual body fat when measurements are taken correctly.
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