# The 6 Best Smart Scales for Your Home
Smart scales deliver body composition data beyond simple weight. These devices measure body fat percentage, muscle mass, bone density, and water retention, providing athletes and fitness enthusiasts with granular tracking metrics that inform training and nutrition decisions.
The market offers several reliable options. Withings Body+ tracks 10 body metrics including BMI and muscle mass through bioelectrical impedance analysis, syncing data to smartphones for trend analysis over time. Fitbit Aria Air delivers basic body composition readings at an accessible price point, integrating seamlessly with Fitbit's ecosystem for users already wearing the brand's wearables.
RENPHO scales use eight-electrode technology to measure body fat, muscle mass, bone mass, and metabolic rate. The app stores unlimited historical data, allowing users to spot patterns in body composition changes across weeks and months. Tanita RD-953 serves serious athletes needing clinical-grade accuracy for body fat measurement using multiple frequency bioelectrical impedance.
Garmin Index S2 integrates with Garmin Connect, automatically uploading metrics to the platform where users can cross-reference scale data with workout performance and GPS data from running watches. This connectivity matters for endurance athletes tracking how body composition shifts align with training load.
Eufy Smart Scale C1 balances accuracy with affordability, measuring 12 metrics and storing data locally rather than relying solely on cloud storage. Nokia Body Cardio goes further, measuring heart rate variability alongside body composition, offering cardiovascular health insights alongside fitness metrics.
Choose a scale matching your existing ecosystem. Fitbit users benefit from Aria Air's integration. Garmin watch owners gain analytical power from Index S2. Athletes needing clinical accuracy should invest in Tanita. For general fitness tracking without ecosystem lock-in, Withings Body+ or R