Calculate your body fat percentage using the US Navy Method. Get accurate body composition analysis based on your measurements.
100% Private Instant Results Gender Specific Body Composition
Body Fat Calculator (US Navy Method)
Male
Female
Your Body Fat Percentage
0%
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Fat Mass
0 kg
Lean Mass
0 kg
BMI
0
Body Fat Categories (Male)
All calculations run locally in your browser. Your data stays private and never leaves your device.
How to Use
1
Select Gender
Choose male or female - formulas are gender-specific
2
Enter Measurements
Input age, height, weight, neck, waist (and hip for females)
3
Click Calculate
Press the Calculate button to see your results
4
Analyze Results
View your body fat %, composition, and category
Features
Instant Results
Get calculations in real-time
100% Private
All processing in your browser
Body Composition
Fat mass vs lean mass analysis
Gender Specific
Separate formulas for males/females
Category Guide
EssentialMen: 2-5% | Women: 10-13%
AthleteMen: 6-13% | Women: 14-20%
FitnessMen: 14-17% | Women: 21-24%
AverageMen: 18-24% | Women: 25-31%
ObeseMen: 25%+ | Women: 32%+
Why Use Our Body Fat Calculator?
Instant Results
Get accurate body fat % in seconds
100% Private
All calculations in your browser — no data sent
Gender Specific
US Navy formulas for males and females
Any Device
Works perfectly on mobile, tablet and desktop
Frequently Asked Questions
What is body fat percentage?
Body fat percentage is the proportion of fat mass to total body mass. It's a key indicator of health and fitness.
How accurate is the US Navy Method?
The US Navy Method is 97-98% accurate compared to hydrostatic weighing when measurements are taken correctly. It's widely used by military and fitness professionals.
What's a healthy body fat percentage?
For men: 8-19% is healthy. For women: 21-33% is healthy. Athletes may be lower, and percentages above these ranges may indicate overweight/obesity.
Why do females need hip measurement?
Women store more fat around hips and thighs. The hip measurement is crucial for accurate body fat calculation in females using the US Navy formula.
Is my data private?
Yes! All calculations happen in your browser. We never store or transmit any personal information.
How to take measurements correctly?
Measure neck below larynx, waist at navel level, and hip at widest point. Use a flexible tape measure without compressing the skin.