Body Fat Calculator (U.S. Navy Method)
Estimate body fat percentage using circumferences with the validated U.S. Navy tape measure algorithm.
Body Fat Calculator (U.S. Navy Method)
Estimate body fat percentage using circumferences with the validated U.S. Navy tape measure algorithm.
Body Fat Standard Ranges (Male)
How to Use Body Fat Calculator (U.S. Navy Method)
1. Take Circumference Measurements
Select your gender and enter measurements for neck, waist (at navel), and hips (for females) using a flexible tape measure.
2. Calculate US Navy Formula
Computes your estimated body fat percentage, lean body mass, and total fat mass with clinical accuracy.
3. Compare to Fitness Categories
Check where your body fat falls across standard fitness categories: Essential Fat, Athletes, Fitness, Average, or Obese.
How This Utility Works
Validated body fat percentage estimator using the official United States Navy tape measure circumference equations. Calculates body composition, lean body mass ratio, and fitness classification from neck, waist, hip, and height measurements.
Your body metrics, age, weight, and fitness statistics remain exclusively on your device. No health data is stored in remote databases.
Frequently Asked Questions
How accurate is the U.S. Navy body fat formula?
When circumferences are measured consistently, the Navy method correlates closely with hydrostatic weighing and DEXA scans within a 3-4% margin.