Body Fat Calculator - Estimate Body Fat Percentage Online Free

Free online body fat calculator. Estimate your body fat percentage using measurements or the US Navy method. Track your fitness progress.

How to Use the Body Fat Calculator

Select method — US Navy (most accurate) or simple BMI-based
Enter measurements — based on the method chosen
Get body fat % — see your estimated body fat and category

The US Navy method uses neck, waist, and hip measurements for the most accurate estimate. All data stays in your browser.

Features

US Navy method — most accurate estimation formula
BMI-based — quick estimate if measurements aren’t available
Body fat categories — essential, athlete, fitness, average, obese
Dual units — imperial and metric
Visual gauge — see where you fall on the scale