Body Fat Calculator Online Free
Estimate your body fat percentage using the US Navy method.
Last Updated: August 30, 2026
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Open ToolHow to Use Toolza’s Free Body Fat Calculator
Follow these simple steps to get your result in seconds.
Enter Measurements
Your gender, age, weight, and height.
Take Body Measurements
Waist, neck, and hip (for females) circumference.
Calculate
Get your estimated body fat percentage.
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Estimate Your Body Fat
Body fat percentage is a key indicator of overall fitness. This calculator estimates your body fat using the US Navy method, which requires only a few simple body measurements.
Method
The US Navy method uses waist, neck, and hip (for females) measurements along with height to estimate body fat percentage. It is a convenient and non-invasive approach.
Frequently Asked Questions
Body fat percentage is the proportion of your total body weight that is made up of fat tissue. It is an indicator of fitness level.
The US Navy method provides a reasonable estimate. For precise measurements, methods like DEXA scans are recommended.
For men: 10-20% is typical; for women: 18-28%. Elite athletes may be lower, while some body fat is essential for health.
Yes. Completely free with no limits.
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