There are several common methods to measure body fat, each with its own advantages and limitations: Skinfold Calipers: Measures thickness of subcutaneous fat at specific body sites by pinching the skin with calipers. It is affordable and portable but requires some practice and anatomy knowledge for accuracy. Measurements can be taken at 3 or 7 body sites, varying by gender. Body Circumference Measurements: Uses tape measurements of certain body parts (waist, neck, hips) combined with height and age in equations to estimate body fat. This method is easy and inexpensive but can vary in accuracy depending on body shape. Bioelectrical Impedance Analysis (BIA): Often found in smart scales, it sends small electrical currents through the body to estimate fat based on how the current flows through fat versus muscle and water. It gives instant results and is convenient but can be affected by hydration levels. Air Displacement Plethysmography (Bod Pod): Measures body volume and density through air displacement to estimate fat percentage. It is accurate and quick but expensive and less accessible. Dual-Energy X-ray Absorptiometry (DXA): Uses low-dose X-rays to differentiate fat, muscle, and bone mass, highly accurate but requires medical equipment. Hydrostatic Weighing: Measures body density by underwater weighing; accurate but less practical. Waist-to-Height Ratio or Waist Circumference: Simple tape measurement methods used for assessing fat distribution and related health risks, not exact body fat percentage. Each method has different accuracy levels and practicality depending on the purpose and resources available. Skinfold calipers and body circumference measurements are common home methods, while Bod Pod, DXA, and hydrostatic weighing are more precise but require specialized equipment or facilities.