Fat Calculator

Calculate your body fat percentage using scientifically proven methods. Track your fitness progress and body composition with precision.

Calculate Your Body Fat

Choose your method and get accurate results

How to Use This Calculator

Select your biological sex, choose a measurement method based on available tools (tape measure or caliper), and enter your measurements. For the most accurate results, take measurements in the morning and ensure consistent measurement locations.

1 Select Biological Sex

Body fat distribution differs between males and females, affecting calculation accuracy.

2 Measurement System

3 Measurement Method

Available Tool

Select the tool you have available for measurements

Calculation Method

BMI-based estimation using age and gender

4 Enter Your Measurements

Height (ft)

Height (in)

Age

Weight (lbs)

About Body Fat Percentage

Body fat percentage is the proportion of fat to total body weight. Unlike BMI, which only considers height and weight, body fat percentage provides a more accurate picture of your body composition and health.

Why It Matters:

Better indicator of health than weight alone
Helps track fitness progress accurately
Essential for athletes and fitness enthusiasts
Guides nutrition and training decisions

Measurement Methods

Heritage BMI: Uses height, weight, age, and gender for quick estimation.

US Navy Method: Requires neck and waist measurements; widely used and validated.

Jackson/Pollock Caliper: Uses skinfold measurements at specific body sites; highly accurate with proper technique.

YMCA Method: Simple waist measurement method suitable for general fitness assessment.