How accurate are smart scale body fat readings?

Smart scales use bioelectrical impedance, which has a 3-5% margin of error compared to DEXA scans. They are useful for tracking trends but not precise body fat measurement.

Should I weigh myself every day?

Daily weighing provides more data points for accurate trend analysis, but only if you can view daily fluctuations (1-3 lbs) without anxiety. Weekly weigh-ins work fine for most people.

Best Smart Scales for Weight Management 2026