Body Fat Calculator

Your Height:

Feet  Inches  

Your Weight in KG:

Your BMI:

Fat Calculator – Estimate Your Body Fat Percentage

Accurately estimate your body fat percentage using our free online Fat Calculator. Enter your measurements to evaluate your fitness and track progress effectively.

What is a Fat Calculator?

The Fat Calculator is a tool that estimates your body fat percentage using gender, height, weight, and body measurements such as waist, neck, and hip circumference. This percentage is crucial for understanding your fitness level, setting weight-loss goals, and tracking overall health.

How to Use the Fat Calculator

  1. Select your gender.
  2. Enter your age, height, and weight.
  3. Provide body measurements including waist, neck, and hips (for females).
  4. Click the "Calculate" button to get your body fat percentage.

Formula Used in Fat Calculator

The calculator uses the U.S. Navy Method, which is a widely accepted and accurate estimation of body fat percentage:

For Men:

Body Fat % = 86.010 × log10(Waist − Neck) − 70.041 × log10(Height) + 36.76

For Women:

Body Fat % = 163.205 × log10(Waist + Hip − Neck) − 97.684 × log10(Height) − 78.387

This formula provides a reliable estimate of body fat using basic anthropometric data.

Example Calculation

Gender: Male
Height: 180 cm
Waist: 90 cm
Neck: 40 cm

Body Fat % = 86.010 × log10(90 − 40) − 70.041 × log10(180) + 36.76
= 86.010 × log10(50) − 70.041 × log10(180) + 36.76 ≈ 22.5%

This person has approximately 22.5% body fat.

Features of the Fat Calculator

  • Accurate body fat percentage estimation
  • Supports both male and female users
  • Uses U.S. Navy Method for reliability
  • Easy-to-use interface
  • No login or subscription needed

Benefits of Using a Fat Calculator

  • Helps track fitness and body composition
  • Assists in setting and achieving weight goals
  • Improves awareness of health risk factors
  • Enables better workout and diet planning
  • Provides motivation by tracking fat loss progress

Related Tools

FAQs About the Fat Calculator

1. How accurate is the Fat Calculator?

It provides an estimation using the U.S. Navy method, which is fairly accurate for most individuals.

2. Can I use this for tracking weight loss?

Yes, it’s an excellent tool for tracking fat loss over time.

3. Do I need to measure hips if I'm male?

No, hip measurement is only required for females.

4. Is this suitable for athletes?

Yes, but athletes may prefer more precise tools like DEXA scans for extreme accuracy.

5. Is my data stored or saved?

No, this calculator runs in-browser and does not store or transmit your data.