Body Fat Calculator

Use the free Body Fat Calculator by Calculator Hub HQ to quickly estimate your body fat percentage using proven formulas based on your height, weight, age, gender, and body measurements. Get accurate, science-backed insights into your fitness and health in seconds.

What is a Body Fat Calculator?

A Body Fat Calculator is a fitness and health tool used to estimate the percentage of fat in your body compared to your total weight. Unlike BMI, which only uses height and weight, this tool uses more precise measurements—like waist, neck, and hip size (for women)—to provide a more realistic body composition estimate.

At Calculator Hub HQ, our Body Fat Calculator uses U.S. Navy and BMI-based methods to provide highly accurate results for both men and women.


Body Fat Calculator


Why Use Calculator Hub HQ’s Body Fat Calculator?

Understanding your body fat percentage is essential for:

  • Tracking weight loss or muscle gain progress
  • Setting realistic fitness goals
  • Determining if your current weight is healthy
  • Designing a personalized diet or workout plan
  • Identifying health risks related to excess fat or low fat

Our calculator is 100% free, mobile-friendly, and requires no sign-up.


How Does the Calculator Work?

Our calculator uses two of the most trusted methods:

  1. U.S. Navy Method – Based on neck, waist, and height (plus hips for women)
  2. BMI Method – Based on height, weight, age, and gender

Both methods provide an estimated body fat percentage, which is then categorized into fitness levels such as:

  • Essential Fat
  • Athletes
  • Fitness
  • Acceptable
  • Obese

How to Use the Body Fat Calculator:

  1. Select your gender
  2. Enter your height and weight
  3. Input your neck, waist, and (optional) hip measurements
  4. Add your age
  5. Click “Calculate” to get your body fat percentage and classification

Ideal Body Fat Percentage Ranges

CategoryWomenMen
Essential Fat10–13%2–5%
Athletes14–20%6–13%
Fitness21–24%14–17%
Average25–31%18–24%
Obese32%+25%+

Frequently Asked Questions

Is this Body Fat Calculator accurate?

It provides a close estimate using proven formulas. For clinical accuracy, consult a health professional or use tools like DEXA scans or skinfold calipers.

Can I use this calculator if I’m very muscular?

Highly muscular individuals may get overestimated fat percentages. In such cases, BMI-based tools may be less accurate.

Is this safe for teens or children?

This calculator is designed for adults. For kids or teens, consult a pediatrician for appropriate body composition assessments.


Know Your Body Better with Calculator Hub HQ

Understanding your body fat percentage is a powerful step toward reaching your health and fitness goals. Use the Body Fat Calculator by Calculator Hub HQ to take control of your progress, tailor your workouts, and stay informed about your body composition.

Start calculating now—it’s quick, free, and built for results!