Body Fat Calculator

Estimate your body fat percentage using the US Navy tape measure method.

Gender

Measurements

Height

Waist (at navel)

Neck (at narrowest)

Coursera Holi Offer

Build your AI fluency and get more done, faster. Get the AI skills employers are looking for and create 20+ solutions you can use at work, right away.

Start Learning

Body Fat

—%

Enter measurements

Body Fat Categories (Men)

Essential Fat

Athletes

Fitness

Average

Obese

2-6%

6-14%

14-18%

18-25%

25%+

Your Body Fat

How to Measure

Waist: Measure at navel level, relaxed
Neck: Measure at the narrowest point

Documentation

US Navy Method

The US Navy body fat formula uses tape measurements to estimate body fat with ±3-4% accuracy of DEXA scans.

Why This Method?

"No expensive equipment needed - just a tape measure."

The Formula

Men: %BF = 86.010 × log₁₀(waist - neck) − 70.041 × log₁₀(height) + 36.76

Women: %BF = 163.205 × log₁₀(waist + hip − neck) − 97.684 × log₁₀(height) − 78.387

Disclaimer: This calculator provides estimates for informational purposes only. Body fat percentage can vary based on hydration, time of day, and measurement technique. Consult a healthcare professional before making health decisions.