Body fat calculator
Body Fat Calculator — Estimate Your Body Fat Percentage Instantly
Want to quickly calculate body fat percentage for men or women? Our free Body Fat Calculator lets you estimate your body fat using simple measurements like waist, neck, hip, height, and weight. It’s accurate, mobile-friendly, and perfect for fitness, health tracking, or medical purposes.
How to Use the Body Fat Calculator
Follow these simple steps to estimate your body fat percentage:
- Enter your weight and height.
- Provide your waist, neck, and hip measurements (hip only for women).
- Select your gender.
- Click Calculate to see your estimated body fat percentage.
- Use Clear to reset all fields.
Formulas Used for Body Fat Calculation
- U.S. Navy Method (Men): 86.010 × log10(Waist − Neck) − 70.041 × log10(Height) + 36.76
- U.S. Navy Method (Women): 163.205 × log10(Waist + Hip − Neck) − 97.684 × log10(Height) − 78.387
- BMI Method (Men): 1.20 × BMI + 0.23 × Age − 16.2
- BMI Method (Women): 1.20 × BMI + 0.23 × Age − 5.4
These formulas are based on scientific research from the U.S. Navy Body Fat Estimation Formula and the Deurenberg BMI Body Fat Equation.
Why Use This Body Fat Calculator?
- ⚡ Quickly and accurately estimate body fat percentage.
- 📱 Fully responsive — works on desktop and mobile devices.
- 🎓 Helps track fitness progress and health goals.
- 💻 Uses proven scientific formulas for reliable results.
Body Fat Categories
- Essential Fat: Men 2–5%, Women 10–13%
- Athletes: Men 6–13%, Women 14–20%
- Fitness: Men 14–17%, Women 21–24%
- Average: Men 18–24%, Women 25–31%
- Obese: Men 25%+, Women 32%+
Whether you’re tracking your fitness progress, planning a workout regimen, or monitoring health goals, this free Body Fat Calculator gives you instant and reliable results.
FAQ — Body Fat Calculator
1. How is body fat percentage calculated?
It is calculated using either the U.S. Navy Method or the BMI Method, which rely on body measurements like waist, neck, hip, height, weight, and age.
2. Is this calculator accurate?
Yes, the formulas are scientifically validated. The Navy method is particularly reliable for both men and women.
3. Can I use this calculator on mobile?
Absolutely. It’s fully responsive and works on any smartphone, tablet, or desktop device.
4. Do I need to provide all measurements?
Yes, for the most accurate results. Hip measurement is required for women only.
5. Is this calculator free?
Yes, it’s completely free and does not require installation or registration.
