Effective methods for measuring body fat percentage include techniques like skinfold calipers, bioelectrical impedance analysis (BIA), and Dual-Energy X-Ray Absorptiometry (DEXA). Skinfold calipers pinch specific body areas to estimate fat thickness. BIA uses electrical impulses to measure body composition, while DEXA provides precise bone density and fat distribution data. Hydrostatic weighing and air displacement plethysmography are also accurate methods but are less accessible. Each technique has its advantages and limitations regarding accuracy, availability, and cost, making it important to choose suitable methods based on individual needs and goals.