Body Fat Calculator
Body Fat Calculator Overview
Estimate body fat percentage using US Navy Method
The Body Fat Calculator uses the US Navy Method to estimate your body fat percentage based on simple tape measurements. Unlike BMI, which only looks at weight, this calculator distinguishes between lean mass and fat mass using circumference measurements of your neck, waist, and hips (for women).
Tracking body fat is a much more accurate way to measure health and fitness progress than scale weight alone. This tool helps you understand your body composition so you can set realistic cutting or bulking goals.
How to Use Body Fat Calculator
- Select your gender (Male/Female).
- Enter your Age, Height, and Weight.
- Measure your Neck circumference (just below the larynx).
- Measure your Waist circumference (at the navel).
- For Females: Measure Hip circumference (widest part).
- Get your Body Fat % and Category immediately.
Frequently Asked Questions
- How accurate is the Navy Method?
- The US Navy Method is widely considered accurate within 1-3% for most people when measurements are taken correctly. It correlates very well with hydrostatic weighing.
- Why do you measure the neck?
- Neck circumference is a proxy for upper body lean mass. A thicker neck generally indicates more muscle, which the formula uses to offset waist measurements.
- What is a healthy body fat percentage?
- For men, 14-17% is considered 'Fitness' level. For women, 21-24% is the 'Fitness' range. Athletes often go lower, while 'Average' is slightly higher.
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