Free Online Tool

Body Fat Calculator

The Body Fat Calculator uses the U.S. Navy circumference method to provide an accurate estimate of body fat percentage, lean mass, and body fat mass.

Interactive Body Fat Calculator

Fitness & Health

Waist (cm)

Neck (cm)

Height (cm)

17%

Calculated via U.S. Navy Body Circumference Standard.

Measure your waist, neck, and hips (for females) in centimeters or inches.
Enter your measurements along with height and gender to calculate your body fat ratio.

Uses neck, waist, height, and hip (for females) measurements to estimate body density and fat %.

Our mathematical algorithms adhere to standard scientific and financial guidelines to deliver maximum accuracy.

For men, essential fat is 2-5% and fit range is 14-17%. For women, essential fat is 10-13% and fit range is 21-24%.

Calculate your daily calorie needs for weight loss, maintenance, or muscle gain based on BMR and activity level.

Compute your Body Mass Index (BMI) instantly to check if your weight falls within a healthy weight range.

Calculate your Basal Metabolic Rate (BMR) to find out how many calories your body burns at complete rest.

Determine your ideal body weight range based on height, gender, and recognized medical formulas.

Calculate your running pace, speed, or target finish time for marathons, 5Ks, 10Ks, and workouts.

Estimate your due date, conception date, and current pregnancy milestone timeline.