What Can Smart Scales Measure?
Modern smart scales use bioelectrical impedance analysis (BIA) — a weak electrical current that passes through the body. Body composition is calculated based on resistance. Measurements: weight, BMI, body fat %, muscle mass, water %, bone mass, visceral fat, metabolic age.
⚠️ Important: BIA scales are not 100% accurate devices — the error in body fat measurement can reach 3-5%. However, they are excellent for tracking trends. Measure at the same time of day, ideally in the morning after using the toilet, before eating.
📊 Comparison of the Best Scales
| Model | Price | Metrics | WiFi/BT | App | Max users |
|---|---|---|---|---|---|
| Withings Body Scan | €399 | 10+ (with ECG) | WiFi+BT | ⭐⭐⭐⭐⭐ | 8 |
| Tanita RD-953 | €200-250 | 12+ | BT | ⭐⭐⭐⭐ | 4 |
| Garmin Index S2 | €150-180 | 8+ | WiFi+BT | ⭐⭐⭐⭐ | 16 |
| Xiaomi Mi Scale 2 | €30-40 | Basic | BT | ⭐⭐⭐ | 16 |
| Eufy Smart Scale P2 | €40-50 | 10+ | WiFi+BT | ⭐⭐⭐⭐ | 16 |
| Renpho Smart Scale | €30-40 | 13+ | BT | ⭐⭐⭐⭐ | Unlimited |
💡 How to Choose According to Your Needs?
🏆 For Professionals
Withings Body Scan or Tanita RD-953 — medical-grade accuracy, the most metrics, segmental body fat measurement.
🏃 For Athletes
Garmin Index S2 — integrates perfectly with the Garmin ecosystem, automatic synchronization with Garmin Connect.
🪙 Budget
Renpho or Xiaomi Mi Scale 2 — surprisingly good features at a low price. Excellent for tracking trends.
👨👩👧👦 For the Family
Garmin Index S2 (16 users) or Eufy P2 — automatically recognizes each family member.