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Health & Fitness

Best smart scales UK 2026: what they measure and which apps they work with

Eight smart scales from Withings, Garmin, eufy, Renpho, Tanita and Salter, with what each one measures, which fitness apps it syncs with and how many people can share it.

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Bare feet on a white glass smart scale on a patterned rug
Photo: Pavel Danilyuk / Pexels
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Quick picks

  1. Best overallWithings Body Smart Wi-Fi body composition scaleCheck price
  2. Best for Garmin usersGarmin Index S2 Wi-Fi smart scale, whiteCheck price
  3. Best value Wi-Fi scaleeufy Smart Scale P2 Pro with Wi-Fi and BluetoothCheck price
  4. Best screen, no phone neededeufy Smart Scale C20 with 3.36-inch colour screenCheck price
  5. Best budgetRENPHO Elis 1 Bluetooth body composition scale, blackCheck price
  6. Best 8-electrode scaleRENPHO MorphoScan Base 8-electrode body composition scaleCheck price
  7. Best for athletesTANITA RD-953 Bluetooth body composition scale, blackCheck price
  8. Best for higher capacitySalter Health Bluetooth smart bathroom scale, 200kgCheck price

How we chose: I shortlisted smart scales from the brands UK buyers most often compare, including Withings, Garmin, eufy, Renpho, Tanita, Salter and Fitbit, from budget Bluetooth scales to 8-electrode models with a handle. For each one I checked the manufacturer's UK product page, manual or listing for what it measures, how many users it supports, how it connects and which apps it syncs with. On 24 October 2026 I reopened every Amazon.co.uk listing with a UK delivery postcode to check it was in stock with an add-to-basket button, and noted who sells it. I don't show prices, because they change daily. I haven't tested these scales myself. These products have not been tested hands-on; this is a research-based roundup. How the research works.

A smart scale weighs you like any bathroom scale, then sends the reading to an app so you can see trends over weeks and months rather than one number on one day. Most also estimate body composition, such as body fat, muscle and water, using bioelectrical impedance: a small, painless current passed through your bare feet (and hands, on models with a handle).

Those body composition figures are estimates. They can change with how much you've had to drink, the time of day and when you last exercised, and different brands can give quite different numbers for the same person. Weight readings are reliable for home use; the other figures are most useful for spotting a trend on the same scale over time.

The app matters as much as the scale. If you already use Garmin Connect, Apple Health, Google Health Connect, Samsung Health or Fitbit, pick a scale that syncs with it. Setting one up before New Year means it's ready for any January fitness routine.

Who this guide is for: Anyone who wants to log weight and body composition alongside their steps, workouts and sleep, families who want one scale for everyone, and runners, cyclists and gym-goers using Garmin, Apple or Samsung apps. These are consumer products, not medical devices.

Black Friday tip: Smart scales are often reduced on Black Friday and again in the January sales. Note today's price and check the price history before you buy, and make sure the model code matches: several brands sell near-identical scales under different names. Our Black Friday deals page explains how to check a deal.

Comparison table

PickWhat it measuresElectrodesConnection & appUsersSyncs withAmazon
Withings Body SmartBest overallWeight, BMI, body fat, muscle, bone, water, visceral fat index, BMR, standing heart rateFoot (4)Wi-Fi and Bluetooth, Withings appUp to 8, recognised automaticallyApple Health, Google FitCheck price
Garmin Index S2Best for Garmin usersWeight, BMI, body fat, body water, skeletal muscle, bone massFootWi-Fi, Garmin ConnectUp to 16Garmin ConnectCheck price
eufy Smart Scale P2 ProBest value Wi-Fi scale16 measurements including weight, body fat, BMI, muscle, bone, standing heart rateITO-coated glass topWi-Fi and Bluetooth, EufyLife appUnlimitedApple Health, Google Fit, FitbitCheck price
eufy Smart Scale C20Best screen, no phone needed16 metrics, shown on the scaleFootBluetooth, EufyLife appUnlimitedVia EufyLife appCheck price
RENPHO Elis 1Best budget13 metrics including weight, BMI, body fat, muscleFoot (4)Bluetooth, Renpho Health appUnlimitedApple Health, Samsung Health, Fitbit, Google FitCheck price
RENPHO MorphoScan BaseBest 8-electrode scaleWeight plus segmental body fat and muscle (arms, legs, trunk)8 (feet and handle), dual-frequencyBluetooth, Renpho Health app8 on the display, unlimited in the appApple Health, Samsung Health, MyFitnessPalCheck price
TANITA RD-953Best for athletes11 metrics including body fat, muscle, bone, water, Muscle Quality ScoreFoot, dual-frequencyBluetooth, MyTANITA app4 on the scaleMyTANITACheck price
Salter Smart ScaleBest for higher capacity17 body metricsFootBluetooth, Salter Health app8 on the scaleSalter Health appCheck price

Specs are from manufacturer listings as of 24 October 2026; claimed figures (running costs, runtimes) are the maker’s, not ours. Check the Amazon page for the current price and exact variant before you buy.

The picks in detail

1
Best overall

Withings Body Smart Wi-Fi body composition scale

Best for: iPhone and Android households who want a polished app

What it measures
Weight, BMI, body fat, muscle, bone, water, visceral fat index, BMR, standing heart rate
Electrodes
Foot (4)
Connection & app
Wi-Fi and Bluetooth, Withings app
Users
Up to 8, recognised automatically
Syncs with
Apple Health, Google Fit

Withings' UK page lists the Body Smart as measuring weight, BMI, body fat, muscle and bone mass, body water, a visceral fat index, basal metabolic rate and standing heart rate, shown on a colour screen. It syncs over Wi-Fi or Bluetooth to the Withings app, which works with Apple Health and Google Fit, and Withings quotes about 15 months of battery life.

It recognises up to eight people automatically, and has modes for babies, pregnancy and athletes, plus one that records your weight without showing the number on the screen, which some people prefer. It's sold by Withings and dispatched by Amazon.

What owners and reviewers like

  • Polished app and colour screen
  • Mode that hides the number
  • Wi-Fi sync, long battery life

Watch-outs

  • Pricier than eufy and Renpho
  • Runs on AAA batteries

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2
Best for Garmin users

Garmin Index S2 Wi-Fi smart scale, white

Best for: Runners and cyclists already using Garmin Connect

What it measures
Weight, BMI, body fat, body water, skeletal muscle, bone mass
Electrodes
Foot
Connection & app
Wi-Fi, Garmin Connect
Users
Up to 16
Syncs with
Garmin Connect

If you own a Garmin watch or bike computer, the Index S2 puts your weight and body composition in the same Garmin Connect app as your training. Garmin's manual lists weight, BMI, body fat, body water, skeletal muscle mass and bone mass, up to 16 users, a colour display, Wi-Fi sync and batteries that last up to nine months. Garmin notes you need bare feet for body composition readings.

It's sold by Amazon. Two other Index S2 listings had no add-to-basket button when I checked, so make sure you're on an in-stock listing.

What owners and reviewers like

  • Same app as Garmin watches
  • Up to 16 users
  • Wi-Fi sync

Watch-outs

  • Fewer metrics than eufy or Renpho
  • Best only if you use Garmin

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3
Best value Wi-Fi scale

eufy Smart Scale P2 Pro with Wi-Fi and Bluetooth

Best for: Syncing to Apple Health, Google Fit or Fitbit for less

What it measures
16 measurements including weight, body fat, BMI, muscle, bone, standing heart rate
Electrodes
ITO-coated glass top
Connection & app
Wi-Fi and Bluetooth, EufyLife app
Users
Unlimited
Syncs with
Apple Health, Google Fit, Fitbit

The P2 Pro gives 16 measurements, including standing heart rate, through the EufyLife app. Instead of separate metal pads, its glass top has an ITO conductive coating, so you can stand anywhere on it. It connects over Wi-Fi or Bluetooth and syncs with Apple Health, Google Fit and Fitbit, which makes it one of the easiest ways to get scale data into a Fitbit account.

The app supports unlimited users, plus baby and pet modes for weighing a child or pet in your arms. It's sold by AnkerDirect UK and dispatched by Amazon.

What owners and reviewers like

  • Wi-Fi at a lower price than Withings
  • Syncs with Fitbit
  • Unlimited users

Watch-outs

  • Needs a EufyLife account for the full data
  • Body composition figures are estimates

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4
Best screen, no phone needed

eufy Smart Scale C20 with 3.36-inch colour screen

Best for: Seeing your readings without opening an app

What it measures
16 metrics, shown on the scale
Electrodes
Foot
Connection & app
Bluetooth, EufyLife app
Users
Unlimited
Syncs with
Via EufyLife app

The C20's 3.36-inch colour screen shows all 16 metrics on the scale itself, so it works offline without a phone. It connects to the EufyLife app over Bluetooth only, and has six modes including simple, guest, baby and pet, and athlete. The app supports unlimited users.

It's sold by AnkerDirect UK and dispatched by Amazon. Because it's Bluetooth only, readings sync when your phone is nearby rather than over Wi-Fi.

What owners and reviewers like

  • Large colour screen
  • Works without a phone
  • Guest and athlete modes

Watch-outs

  • Bluetooth only
  • Syncs only when your phone is near

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5
Best budget

RENPHO Elis 1 Bluetooth body composition scale, black

Best for: A first smart scale for the least money

What it measures
13 metrics including weight, BMI, body fat, muscle
Electrodes
Foot (4)
Connection & app
Bluetooth, Renpho Health app
Users
Unlimited
Syncs with
Apple Health, Samsung Health, Fitbit, Google Fit

The Elis 1 has four electrodes on a tempered glass top, a 180kg capacity and 13 measurements in the Renpho Health app. It's Bluetooth only, but stores readings until your phone reconnects, and syncs with Samsung Health, Apple Health, Fitbit and Google Fit. It's sold by Amazon.

The app supports unlimited users and a baby mode. It's a simple, low-cost way to get weight and trends into the fitness app you already use, especially Samsung Health.

What owners and reviewers like

  • Low price
  • Syncs with Samsung Health and Fitbit
  • Unlimited users

Watch-outs

  • Bluetooth only
  • Basic display

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6
Best 8-electrode scale

RENPHO MorphoScan Base 8-electrode body composition scale

Best for: Arm, leg and body readings, not just feet

What it measures
Weight plus segmental body fat and muscle (arms, legs, trunk)
Electrodes
8 (feet and handle), dual-frequency
Connection & app
Bluetooth, Renpho Health app
Users
8 on the display, unlimited in the app
Syncs with
Apple Health, Samsung Health, MyFitnessPal

Most smart scales measure only through your feet. The MorphoScan Base adds a handle on a cable, giving eight electrodes and dual-frequency segmental readings, so it can estimate body fat and muscle separately for your arms, legs and trunk. The handle's LED display shows BMI, body fat, skeletal muscle, a visceral fat index and a seven-day weight trend for up to eight users. It holds up to 180kg and is sold by Amazon.

It syncs with Apple Health, MyFitnessPal and Samsung Health through the Renpho Health app. Like every scale here, its body composition figures are estimates.

What owners and reviewers like

  • Hand and foot electrodes
  • Segmental readings
  • Display on the handle

Watch-outs

  • Handle and cable to store
  • Bulkier than a flat scale

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7
Best for athletes

TANITA RD-953 Bluetooth body composition scale, black

Best for: Detailed muscle tracking from a body composition specialist

What it measures
11 metrics including body fat, muscle, bone, water, Muscle Quality Score
Electrodes
Foot, dual-frequency
Connection & app
Bluetooth, MyTANITA app
Users
4 on the scale
Syncs with
MyTANITA

Tanita has made body composition monitors for decades. The RD-953 uses dual-frequency bioelectrical impedance and gives 11 measurements, including body fat, muscle mass, bone mass, body water and Tanita's Muscle Quality Score, which Tanita says gives an indication of the condition of your muscles. It has a 200kg capacity, four user memories and Bluetooth sync to the MyTANITA app.

It's sold by Tanita Europe and dispatched by Amazon. Check the MyTANITA app's sync options if you want your readings in another fitness app.

What owners and reviewers like

  • Dual-frequency readings
  • Muscle Quality Score
  • 200kg capacity

Watch-outs

  • Only four user memories
  • Bluetooth only

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8
Best for higher capacity

Salter Health Bluetooth smart bathroom scale, 200kg

Best for: A familiar brand with a 200kg capacity

What it measures
17 body metrics
Electrodes
Foot
Connection & app
Bluetooth, Salter Health app
Users
8 on the scale
Syncs with
Salter Health app

Salter's smart scale shows 17 body metrics on a backlit LCD and syncs over Bluetooth to the Salter Health app, where you can see trends and set your own goals. It has a 200kg capacity, an eight-user memory and an athlete mode. It's sold by Amazon.

You can use it without the app as a normal bathroom scale with body composition, which suits anyone who doesn't want another account.

What owners and reviewers like

  • 200kg capacity
  • Works without the app
  • Eight-user memory

Watch-outs

  • Bluetooth only
  • Fewer fitness-app links listed than Renpho or eufy

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  • Apple Health: Withings, eufy, Renpho.
  • Google Fit / Health Connect: Withings, eufy, Renpho (Elis 1).
  • Samsung Health: Renpho.
  • Fitbit: eufy P2 Pro and Renpho Elis 1 sync to a Fitbit account.
  • Garmin Connect: Garmin Index S2.
  • Own apps: Tanita (MyTANITA) and Salter (Salter Health). Check each app's sync options before you buy.

Fitbit's own Aria Air scale had no add-to-basket button on Amazon.co.uk when I checked on 24 October 2026, so it's not in the list. If you use Fitbit, the eufy P2 Pro or Renpho Elis 1 can send readings to your Fitbit account instead.

Weight readings are accurate enough for home use on all of these. Body fat, muscle and water figures are estimates from bioelectrical impedance and can vary by several percentage points from day to day and between brands. To get consistent readings:

  • Weigh at the same time each day, ideally in the morning before eating or drinking.
  • Stand barefoot on a hard, level floor, not carpet (some scales include carpet feet).
  • Avoid weighing straight after exercise, a shower or a large drink.
  • Look at the weekly trend in the app rather than any single reading.

Scales with hand and foot electrodes, like the Renpho MorphoScan, measure through more of your body, but they're still estimates rather than clinical measurements.

Manufacturers advise against using body composition features if you have a pacemaker or other implanted electronic medical device, and some also advise against them during pregnancy. Check the safety section of the manual before you use one. These scales aren't medical devices, so speak to your GP about any health concern.

Wi-Fi scales (Withings Body Smart, Garmin Index S2, eufy P2 Pro) upload readings automatically, even if your phone is in another room. Bluetooth scales (eufy C20, Renpho, Tanita, Salter) sync when you open the app nearby, and some store readings until then. Bluetooth is fine if you always have your phone with you; Wi-Fi suits families sharing one scale.

If you're planning new fitness routines in the new year, set the scale up before then: create a profile for each person, connect the app you use, and decide whether you want the number on screen at all. Withings and eufy both have modes that keep the display simple. A smart scale can be a thoughtful present for someone who has asked for one, but it isn't a gift to give as a hint. For more ideas, see our Christmas gift guide.

Withings also makes the Body, which measures weight and BMI only, and pricier models with extra heart and vascular features that go beyond body composition, so they're not covered here. Tanita's BC-545N is a segmental scale with no app, for anyone who prefers to keep their readings off their phone.

FAQs

What's the best smart scale in the UK?

For most households, the Withings Body Smart. It has Wi-Fi and Bluetooth, a colour screen, recognises up to eight people and syncs with Apple Health and Google Fit. Garmin users should choose the Index S2, and the Renpho Elis 1 is the best budget option.

Are body fat readings on smart scales accurate?

They're estimates. Smart scales use bioelectrical impedance, which is affected by hydration, time of day and recent exercise, and different brands can give different numbers. They're most useful for tracking a trend on the same scale over time.

Which smart scale works with Fitbit?

Fitbit's own Aria Air wasn't available to buy on Amazon.co.uk when I checked. The eufy P2 Pro and Renpho Elis 1 both sync to a Fitbit account.

Which smart scale works with Apple Health?

Withings, eufy and Renpho scales all sync with Apple Health.

Can more than one person use a smart scale?

Yes. The Withings Body Smart recognises up to eight people, the Garmin Index S2 up to 16, and the eufy and Renpho apps support unlimited users.

Have you tested these scales?

No. This guide is based on manufacturers' specifications and manuals, retailer listings and independent advice. I don't own or test the products. See how we research.

Do you get commission?

Yes. If you buy through links on this page, Amazon may pay me a small commission at no extra cost to you. It doesn't affect which scales are included. See the affiliate disclosure.

Prices change constantly, so we don’t list them here. Always check the current price, seller and delivery details on Amazon before buying. If anything on this page looks wrong or out of date, let me know.

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