Smart Scales That Track More Than Body Weight
The Withings Body Smart is the best all round smart scale for accuracy and app quality, the Renpho Elis 1 offers the most tracking for the least money, and the Garmin Index S2 is the natural pick for anyone already using Garmin wearables. The eufy Smart Scale P3 balances features and value well.
The Withings Body Smart is our top overall smart scale, the Renpho Elis 1 delivers the most metrics per pound spent, and the Garmin Index S2 is the obvious choice for people already inside the Garmin ecosystem.
Smart scales are tricky to compare because bioelectrical impedance body fat readings differ noticeably between brands, so the useful question is whether a scale is consistent rather than whether it is absolutely correct. We compared measured metrics, connectivity, app export options, multi user recognition and what owners report about sync reliability and long term battery life.
Our top picks
Withings Body Smart
The Body Smart pairs precise weight measurement with body composition estimates and a genuinely well designed app that presents trends rather than daily noise. An eyes closed mode hides the number and shows only trend information, which owners with weight sensitivity find valuable. It syncs over Wi-Fi so readings appear without opening the phone.
Pros
- Excellent app with clear trend view
- Wi-Fi sync without opening the phone
- Eyes closed mode hides the number
Cons
- Some features sit behind a subscription
- Costs more than value brands
Renpho Elis 1 Smart Body Fat Scale
The Elis 1 reports a long list of body composition estimates and syncs to a free app that connects with Apple Health, Google Fit and Fitbit. Unlimited user profiles make it practical for a whole household. Bluetooth only means you need the phone nearby, and the sheer number of metrics is more presentation than precision, so use the trend rather than the individual figures.
Pros
- Very low cost for the feature set
- Unlimited user profiles
- Connects to major fitness platforms
Cons
- Requires the phone nearby to sync
- Many metrics are estimates rather than measurements
Garmin Index S2 Smart Scale
The Index S2 feeds directly into Garmin Connect, so weight and body composition sit alongside training load, sleep and recovery data from a Garmin watch. That single view is the reason to choose it over a cheaper scale. The colour display shows a weight trend graph and local weather, and it syncs over Wi-Fi without any phone interaction.
Pros
- Integrates fully with Garmin Connect
- Colour trend display on the scale
- Recognises many household users
Cons
- Most valuable only within the Garmin ecosystem
- Premium price for the metrics offered
eufy Smart Scale P3
The P3 has a large colour display and a separate heart rate measurement alongside its body composition estimates, and a 3D body model in the app makes changes easier to interpret than a list of numbers. It handles a household without needing profile switching. Sync happens over Bluetooth and Wi-Fi depending on setup, which owners find reliable once configured.
Pros
- Clear large colour display
- Includes heart rate measurement
- 3D body model visualises change
Cons
- Initial Wi-Fi setup takes patience
- Body composition figures differ from clinical methods
FITINDEX Smart Body Fat Scale
FITINDEX handles unlimited users with automatic recognition and includes a baby mode that weighs an infant by subtracting the adult holding them. The app is straightforward and exports to the major health platforms. It is Bluetooth only, so readings queue until the phone is opened nearby, which occasionally causes confusion about missing data.
Pros
- Unlimited users with auto recognition
- Baby weighing mode included
- Simple, uncluttered app
Cons
- Bluetooth only, readings queue until sync
- Basic monochrome display
Etekcity Smart Fitness Scale
The Etekcity scale covers the fundamentals, accurate weight, a set of body composition estimates and a free app, without the extras that push prices up. The tempered glass platform and stable footing make it feel more solid than the price suggests. Advanced features like Wi-Fi sync and athlete modes are absent, which is the trade off for the cost.
Pros
- Lowest cost of the group
- Solid build for the money
- Straightforward app with health platform export
Cons
- No Wi-Fi sync
- Fewer app features than premium rivals
Wyze Scale X
The Scale X sits inside the wider Wyze app alongside other smart home devices, which suits households already using Wyze cameras and sensors. It measures heart rate as well as body composition and includes a luggage weighing mode. The app is built around the whole Wyze range rather than health specifically, so it is less focused than Withings or Garmin.
Pros
- Fits into an existing Wyze setup
- Heart rate and extra weighing modes
- Low cost with a good display
Cons
- App is not health focused
- Bluetooth only connectivity
Before you buy
What smart scales actually measure Every scale here measures weight directly and estimates everything else. Body fat, muscle and water figures come from bioelectrical impedance, which sends a tiny current through the body and infers composition from the resistance. Hydration, recent meals, exercise and even skin temperature shift that reading. Treat the numbers as a trend line rather than a clinical measurement, and compare readings taken under the same conditions.
Consistency beats absolute accuracy Two scales can report body fat percentages several points apart and both be internally consistent. Since what you care about is whether the number is moving in the right direction, a scale that measures the same way every time is more useful than one that claims greater accuracy. Weigh at the same time each morning, before eating, after using the bathroom and with bare feet.
App quality and where your data goes You interact with the app far more than the scale, and this is where products separate. Look for clear trend graphs rather than daily numbers, easy export to Apple Health, Google Fit or Fitbit, and no critical feature locked behind a subscription. Check whether the app requires an account and how the manufacturer handles health data, because this is more sensitive information than most connected devices collect.
Multi user handling and household use Scales differ in how many profiles they support and how well they tell users apart. Automatic recognition works by matching weight to a known profile, which struggles when two household members are within a few pounds of each other. If that applies to you, look for a model with manual profile selection on the scale itself, and note that some scales offer a guest mode that records nothing.
The lineup, side by side
| # | Model | Metrics | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | Withings Body Smart | Weight, body fat, muscle, water, BMI | Best overall | 9.4 | Check price |
| 2 | Renpho Elis 1 Smart Body Fat Scale | 13 body composition measures | Best value | 9.2 | Check price |
| 3 | Garmin Index S2 Smart Scale | Weight, body fat, muscle, bone, water, BMI | Best for Garmin users | 9.0 | Check price |
| 4 | eufy Smart Scale P3 | 16 measures plus heart rate | Best display | 8.8 | Check price |
| 5 | FITINDEX Smart Body Fat Scale | 13 body composition measures | Best for families | 8.6 | Check price |
| 6 | Etekcity Smart Fitness Scale | 12 body composition measures | Best budget | 8.3 | Check price |
| 7 | Wyze Scale X | 13 measures plus heart rate | Best for smart home integration | 8.0 | Check price |
Common questions
How accurate are smart scale body fat readings?
Weight is accurate, body fat is an estimate from bioelectrical impedance and can differ noticeably from clinical methods. It is reliable for tracking direction over weeks rather than for a precise percentage on any single day.
When should I weigh myself for the most consistent readings?
First thing in the morning, after using the bathroom and before eating or drinking, with bare feet on a hard flat floor. Consistency of conditions matters more than the time of day itself.
Do smart scales work without a phone?
Wi-Fi models like the Withings Body Smart and Garmin Index S2 upload readings on their own. Bluetooth only scales store readings and sync the next time the app is opened nearby, which usually works but occasionally drops data.
Can several people use the same smart scale?
Yes. Most support multiple profiles and many recognise users automatically by weight. Recognition can confuse household members of similar weight, so check whether manual selection is available if that applies.
Why does my weight change between morning and evening?
Normal daily fluctuation of several pounds comes from food, fluid and sodium. It is why single readings are misleading and why the trend line across a week or more is the number worth watching.
Are smart scales safe for everyone?
Bioelectrical impedance uses a very small current. Manufacturers generally advise that people with a pacemaker or other implanted electronic device avoid the body composition function, and pregnancy is another situation where the estimates are not validated. Check the manual and speak with a healthcare professional if unsure.
Do I need a subscription?
Not for basic weight and composition tracking on any of these. Withings offers a paid tier for advanced insights, and the free functionality is complete enough for most users without it.
What weight capacity do these scales support?
Most support up to around 400 pounds. Check the individual specification if you need more, and place the scale on a hard flat surface, since carpet reduces accuracy on any scale.
The bottom line
The Withings Body Smart is the scale we would choose for most people, because the app turns daily fluctuation into a readable trend and the Wi-Fi sync means it works without any effort. Anyone training with a Garmin watch gains more from the Index S2 feeding the same dashboard. If you simply want the numbers without the premium, the Renpho Elis 1 covers the essentials for a fraction of the cost.
