There are many ways to measure body composition, and one popular and accurate method is bioelectric impedance (BIA). However, BIA can be expensive and difficult to access. As an alternative, the US Navy SEAL formula is a simple way to measure body fat ratio. This formula takes into account variables such as gender, weight, height, waist, hip, and neck circumference.

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Out of the five formulas listed in the calculator, the US Navy method is the most efficient and user friendly.