Question 1

How is body fat percentage calculated?

Accepted Answer

Our calculator uses the US Navy method, which estimates body fat percentage using body measurements. For men, it uses height, neck, and waist measurements. For women, it adds hip measurements. This method provides a reasonable approximation without specialized equipment.

Question 2

What is a healthy body fat percentage?

Accepted Answer

Healthy body fat ranges vary by gender and age. For men: Essential (2-5%), Athletic (6-13%), Fitness (14-17%), Average (18-24%), Obese (25%+). For women: Essential (10-13%), Athletic (14-20%), Fitness (21-24%), Average (25-31%), Obese (32%+).

Question 3

How accurate is the US Navy method?

Accepted Answer

The US Navy method provides a reasonable estimate of body fat percentage, typically within 3-4% of more accurate methods like DEXA scans. Accuracy depends on consistent measurement technique. For best results, measure at the same time of day under consistent conditions.

Question 4

How often should I measure body fat?

Accepted Answer

Measure body fat every 2-4 weeks for progress tracking. More frequent measurements may show fluctuations due to hydration, food intake, or measurement technique. Consistent timing and conditions improve tracking accuracy.

Question 5

Can I track body fat changes over time?

Accepted Answer

Yes! Our calculator includes progress tracking features. Set a target body fat percentage and track your progress over time. The calculator shows your current BFP, target BFP, and the difference needed to reach your goal.

Body Fat Calculator - US Navy Method with Progress Tracking

When Should You Use This Calculator?

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