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Body Fat Calculator

Estimate body fat percentage with the U.S. Navy method and review an ideal weight reference based on height.

SexHeight (cm)Neck (cm)Waist (cm)

Estimated body fat

Body fat range

Fitness

Ideal weight reference

56.7 - 76.3 kg

How body fat is estimated

This tool uses circumference measurements with the U.S. Navy formula to estimate body fat percentage. Ideal weight is shown as a simple height-based reference.

Calculation notes

Measurement position can materially affect the estimate.
This is a quick estimate and not a substitute for medical assessment.
Ideal weight is shown as a general reference range.

Frequently asked questions

How accurate is this estimate? expand_more

It is a practical estimate based on body measurements, but it can differ from DEXA, InBody, or clinical testing.

Is ideal weight an absolute target? expand_more

No. Frame size, muscle mass, and training history can change what is ideal for an individual.