5 Ways to Measure Body Fat Percentage (Ranked by Accuracy)
From DEXA scans to the mirror, here are the five most accessible methods compared.
DEXA scan: plus or minus 1-2% accuracy, costs $50-150. Skinfold calipers: plus or minus 3-4% with experienced tester, costs $10-30. Navy method (tape measure): plus or minus 3-4%, free. Bioelectrical impedance (smart scales): plus or minus 4-5%, costs $30-100. Visual comparison: within 5%, free. For most people, the Navy method and progress photos are the best combination of accuracy and accessibility.
Which Method to Choose
For absolute accuracy: DEXA scan. For tracking changes over time: any method used consistently. The method matters less than consistency — pick one and use it the same way every time. Trends matter more than any single measurement.