Are smart scales accurate for body fat percentage?

Smart scales use bioelectrical impedance, which estimates rather than measures body fat. Absolute numbers can be off by several percentage points compared to a DEXA scan, but the trend over weeks is reliable if you weigh in under consistent conditions, ideally first thing in the morning before eating or drinking.

Do smart scales work with Apple Health and Google Health Connect?

Most 2026 smart scales export to Apple Health, and a growing number support Google Health Connect. Withings, Garmin, Eufy and Renpho all sync weight and body composition automatically. Check the specific app before buying if a particular platform matters to you.

Is Wi-Fi worth it over a Bluetooth-only smart scale?

Yes, if you value convenience. A Wi-Fi scale uploads readings the moment you step off, without opening an app or having your phone nearby. Bluetooth-only scales are cheaper but require your phone in range for every weigh-in, which is how tracking habits die.

The Best Smart Scales of 2026

Choosing the best smart scale in 2026 comes down to three things: how consistently it reads body composition, how good the companion app is, and whether it plays nicely with the rest of your smart home. Every scale below uses bioelectrical impedance to estimate body fat and muscle mass, but the quality of that estimate and the depth of trend reporting vary widely. Here are the eight models worth your money this year.

How we ranked them

We ranked every smart scale in 2026 on five factors: repeatability of body composition readings across back-to-back weigh-ins, app design and long-term trend charting, multi-user support and automatic profile recognition, connectivity (Wi-Fi beats Bluetooth-only for hands-off syncing), and integration with Apple Health, Google Health Connect, Fitbit and Strava. We also weighted whether core metrics stay free or sit behind a subscription. If you are assembling a wider setup, start with our guide to the best smart home devices.

What each pick is best for

Withings Body Scan — serious health tracking. The most advanced consumer scale available, adding a retractable handle for segmental body composition and a six-lead ECG. Overkill for casual tracking, but nothing else measures this thoroughly.

Withings Body Smart — best overall. The sweet spot in the Withings line: Wi-Fi syncing, accurate body composition, eyes-closed weight mode and a genuinely excellent app.

Garmin Index S2 — Garmin watch owners. If you already live in Garmin Connect, this is the obvious choice. Weight and body fat flow straight into your training data alongside sleep and recovery metrics.

Eufy Smart Scale P3 — detail on a budget. Sixteen measurements, a colour display and a 3D body model in the app, at a mid-range price. Strong value if you want detail without a subscription.

Renpho Elis 1 — tight budgets. The best cheap smart scale. Bluetooth-only and the app is basic, but readings are consistent and it supports unlimited users.

Wyze Scale S — first-time buyers. Cheap, clean and surprisingly capable, with heart rate measurement and automatic user recognition.

Etekcity Smart Fitness Scale — simple tracking. Reliable basics with a bright display and solid app export to Apple Health and Google Fit. No frills, no subscription.

Amazfit Smart Scale — Zepp ecosystem users. Pairs neatly with Amazfit and Zepp wearables and covers the standard composition metrics at a low price.

If sleep is the metric you care about most, a scale is only part of the picture — see our guide to the best smart bed setups and the best red light therapy devices.

Verdict

For most households the Withings Body Smart is the best smart scale of 2026: Wi-Fi syncing means you never touch your phone, the app trend charts are the clearest on the market, and multi-user recognition actually works. Spend more only if you want the clinical-grade segmental readings of the Body Scan. If price is the deciding factor, the Renpho Elis 1 delivers consistent numbers for a fraction of the cost.