Question 1

What is the Navy method?

Accepted Answer

The U.S. Navy body fat formula uses neck, waist, and hip (women) circumference measurements along with height to estimate body fat percentage.

Question 2

How accurate is this method?

Accepted Answer

The Navy method is accurate within 1-3% for most people. It is less accurate for very muscular or very lean individuals.

Question 3

What measurements do I need?

Accepted Answer

Men: neck circumference, waist circumference, and height. Women: neck, waist, hip circumference, and height.

Question 4

What are healthy body fat ranges?

Accepted Answer

Men: 6-24% (essential 2-5%). Women: 14-31% (essential 10-13%). Athletes typically have lower percentages.

Question 5

Is my data stored anywhere?

Accepted Answer

No. All calculations happen in your browser. No data is sent to any server.

Body Fat Calculator

Frequently Asked Questions