Smart scales do far more than display your weight. Modern models measure body fat percentage, muscle mass, bone density, hydration, and metabolic rate — all from a 30-second weigh-in. The data syncs automatically to your phone and builds a long-term picture of your health trends.
We evaluated measurement accuracy, app quality, multi-user support, and long-term tracking to find the best smart scales available.
What to Look For
- BIA accuracy: Bioelectrical impedance measurements vary based on hydration, time of day, and foot placement. Use them for trends, not absolute values.
- App ecosystem: Apple Health, Google Fit, Fitbit, and Garmin Connect integrations determine how useful the data is long-term.
- Multi-user support: Most smart scales support 8-20 users with automatic recognition.
- Weight limit: Standard is 330-400 lbs. Check this if it applies to your household.
Our Top Picks
RENPHO Smart Body Scale
Measures 13 body metrics, syncs via Bluetooth to the RENPHO app, and connects to Apple Health, Fitbit, and Google Fit. At around $30, it delivers far more than the price suggests. The most popular smart scale on Amazon for good reason.
Withings Body+ Wi-Fi Scale
Clinical-grade accuracy with Wi-Fi sync so data uploads automatically without opening an app. Tracks body fat, water percentage, muscle mass, and bone mass. Withings Health Mate app is best-in-class for long-term health tracking.
Eufy Smart Scale P2 Pro
3D body scanning feature estimates body shape changes over time. Measures 16 metrics, supports 16 users, and has an easy-to-read LED display. The EufyLife app is clean and integrates well with Apple Health and Google Fit.
Garmin Index S2 Smart Scale
Built for people in the Garmin ecosystem. Syncs directly to Garmin Connect for integration with your GPS watch data. Measures 9 metrics and supports 16 users. More expensive, but the ecosystem integration is unmatched for serious athletes.
Bottom line: The RENPHO is the easy recommendation for most people. The Withings Body+ is worth the step up if long-term trend tracking and clinical accuracy matter to you.
