Body Fat Calculator
Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy Body Fat Formula.
Body Fat Calculator
The Atlasaro Body Fat Calculator estimates your body fat percentage using the internationally recognized U.S. Navy Body Fat Formula.
Unlike BMI, which only compares weight and height, body fat percentage provides a much better understanding of your body composition.
Whether you're trying to lose weight, gain muscle, or simply improve your health, knowing your body fat percentage can help you track your progress more accurately.
What Is Body Fat Percentage?
Body fat percentage is the proportion of fat mass compared to your total body weight.
For example:
- Weight = 80 kg
- Body Fat = 20%
This means:
- 16 kg is fat
- 64 kg is lean body mass
Why Measure Body Fat?
Body fat percentage provides a better picture of your health than body weight alone.
Two people can weigh exactly the same but have completely different body compositions.
Body fat is commonly used by:
- Athletes
- Personal trainers
- Nutritionists
- Doctors
- Fitness enthusiasts
U.S. Navy Formula
This calculator uses the official U.S. Navy Body Fat Formula.
For men the calculation uses:
- Height
- Neck circumference
- Waist circumference
For women the calculation uses:
- Height
- Neck circumference
- Waist circumference
- Hip circumference
The formula has been used for decades and provides a reliable estimate without specialized equipment.
How to Use
Step 1
Select your gender.
Step 2
Enter your height.
Step 3
Measure your neck circumference.
Step 4
Measure your waist.
Women should also measure their hips.
Step 5
Click Calculate Body Fat.
The calculator instantly displays:
- Estimated body fat percentage
- Body fat category
Body Fat Categories
Men
| Category | Body Fat |
|---|---|
| Essential Fat | 2–5% |
| Athlete | 6–13% |
| Fitness | 14–17% |
| Average | 18–24% |
| Obese | 25%+ |
Women
| Category | Body Fat |
|---|---|
| Essential Fat | 10–13% |
| Athlete | 14–20% |
| Fitness | 21–24% |
| Average | 25–31% |
| Obese | 32%+ |
Is BMI Better?
Not necessarily.
BMI estimates healthy weight based only on height and weight.
Body Fat Percentage provides a much more detailed picture of your physical condition.
For best results, use both calculators together.
Frequently Asked Questions
Is the U.S. Navy Formula accurate?
Yes.
It is one of the most widely used body fat estimation methods that requires only simple body measurements.
Is this better than BMI?
For most people, yes.
Body fat percentage provides more useful information than BMI alone.
Do I need special equipment?
No.
You only need a measuring tape.
Can athletes use this calculator?
Yes.
Athletes often monitor body fat percentage to optimize performance.
Is this calculator free?
Yes.
It is completely free and works on desktop, tablet, and mobile devices.
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