Withings WS-50 Smart Body Analyzer, Health Tracking Wireless Bathroom Scale, White

Product information

Withings WS-50 Smart Body Analyzer will help you better understand your body and your health. This versatile scale will help you track your weight, body composition, heart rate, and even the air quality in your room. It'll coach you and allow you to set goals split into achievable weekly targets, so you can work with it to improve your body and health.

Understand your body
Smart Body Analyzer puts your body data into perspective. It considers variations in the fat-lean ratio and Body Mass Index to reveal patterns and ensure you target the right pounds. You can view your progress and make informed decisions to help you get your body the way you want it. Furthermore, with MyFitnessPal compatibility, you can follow all your data on your smartphone, letting you manage your daily calorie intake to reach your goals.

Unmatched accuracy
Smart Body Analyzer has been tested to give you data you can trust. Withing's Position Control technology will ensure that you're positioned correctly, in order to present the most accurate results possible. You can also choose between several body composition models to optimise fat mass measurement, so you know that the data you're getting is accurate to you.

On the pulse
You can use Smart Body Analyzer to measure your heart rate, just by standing on it for a few seconds. Taking regular measurements of your resting pulse can help you assess your fitness level, with lowering it over time meaning that you're strengthening your heart, the basis for good health.

Coaching in the palm of your hand
Withing's free Health Mate app for iOS and Android will collate your data and present them in helpful, easy to understand graphs. The apps will also allow you to set goals and break them down into achievable weekly targets with relevant tips to help you along the way. Smart Body Analyzer also works with over 100 partner apps like RunKeeper, Endomondo and MyFitnessPal.

Breathe easy
Smart Body Analyzer also checks indoor air quality by measuring temperature and carbon dioxide. Your app will then build a CO2-level graph that will let you know the times when you need to clear the air. When used in your bedroom, this can help you get a higher quality night's sleep.

Versatile, easy, instant
Once you have the app, successful setup of the scale is just a few taps away. It can work over both Bluetooth and Wi-Fi, for long range pairing to your chosen device and results are sent automatically, appearing almost instantly after you step on.

Smart Body Analyzer can recognise up to 8 users, without the need for logging in, so the whole family can use it. You can also choose who see your data: share it on social networks, forward it to your doctor via email or keep it private- it's up to you who sees what.

In the Box:
1x Smart Body Analyzer
4x 1.5V Alkaline cells (AAA)
4x Carpet feet for high-accuracy on carpet or rug
1x Installation guide

Additional Measurements
Body fat, heart rate, air quality
Analyses BMI
Compatible with
iPhone (3GS or higher), iPad (all versions), iPad mini, iPod touch (3rd generation or higher), with iOS 5 and higher and Internet connectivity. Android 2.3.3 or higher smartphone or tablet with Bluetooth compatibility and Internet connectivity
H327 x W327 x D23 mm
Maximum User Weight
396lb (180kg)
Model name / number
Pacemaker Compatible Information Can be used by persons fitted with a pacemaker
Power Supply
4x AAA batteries (included)
Smartphone Connection
Stone to Kg switch Information Easily switches to measure in metric or Imperial
User Memory
8 user memory


  • Click & collect

    Click & collect from John Lewis and Waitrose shops tomorrow from 2pm
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  • Collect+

    Collect + from a local shop from tomorrow, postcode exclusions apply
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  • UK delivery

    Standard delivery within 5 working days
    Named or Saturday UK delivery
    Named day UK delivery pre-10.30am
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  • International delivery not available


We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.

Q & As

Rated 3.6 out of 5 by 8 reviewers.
Rated 5 out of 5 by Accurate measurements We are really enjoying the ease of data collection through the Withings scales, which sends automatic updates to our respective apps. I use the UP2 system, while my partner uses Fitbit, and both apps work well together with the scales. I also love the daily weather forecasts, it's a great start to the day every morning. I am not sure about the accuracy of the body fat % measurement, but I think overall, weighing yourself daily helps you understand how your body responds to the choices that you make. 25 November 2015
Rated 4 out of 5 by Almost excellent This is my second Withings scales and on the whole I am very pleased with it. It manages well on a carpet with the extra feet provided, syncs with my iPhone and tells me when it's going to rain outside! But I do prefer the previous version which doesn't seem to be available anymore. This new version doesn't include BMI though it does have fat percentage and CO2. Haven't quite worked out why that might be helpful. 17 February 2015
Rated 1 out of 5 by Great idea - very poor performance This scale claims to sync via bluetooth to your iphone/ipad seamlessley. This it fails to do! I've had the product 1 week, and had to re-pair the bluetooth 4 times. The scale is beautiful and when synced works a treat, but the whole idea was to step on and have the data sent to my phone - not to spend 5 minutes faffing with it re-pairing/syncing it. I shall be returning - which is a pain bearing in mind I drove 80 miles to specifically get these scales, and now have to repeat 08 February 2015
Rated 5 out of 5 by Excellent very simple instructions, follow them and then it takes a few minutes to set up. It send my results over wifi each day very effectively to the Website and the App. All the data is very clear, in Lbs, kgs, etc. I personally use Lbs and i use this scales to help improve my physique. Using calipers etc i measured myself at 10% approx bfat, and my old scales i was 181Lbs. With this scale there are a few different options of how it works out your bodyfat, i set mine to Athlete mode and it gives me 9.4% bfat which i would say is V accurate!!! These scales beat my expectation! Highly recommend 5* !!! 06 September 2014
Rated 1 out of 5 by Complete waste of money The application that links to this is poor - numerous bugs and it doesn't show pounds on the timeline only stone. The scales usually only sync about 1 in 10 times by bluetooth - very fiddly. The app might be ok if you use kg or just pounds but not Stones and pounds. If you both have the same stone it doesn't recognise who you are. I don't use it anymore -so for me it was a complete waste of money. One star is too good for this. Good concept poorly executed in my opinion. 21 August 2014
Rated 3 out of 5 by Great but needs improvement I have been using the Withings Smart Body Analyser for a few weeks now. As some of the independent reviews suggested, there are some problems with inaccurate readings, particularly with the body fat measurement, although I am now worried that the weight measurement may also have some inaccuracies. My bigger problem is the accompanying application for iOS - Health Mate. It does not sync when it should, and sometimes does not sync at all. There is no way to request it to sync, which would have been an obvious menu option. For the really high price, I expected better. Much better. 26 July 2014
Rated 5 out of 5 by Excellent Product Accurate scales, look good in the bathroom. WiFi easy to configure via bluetooth smartphone connection. Data automatically uploads to Withings account for view on smartphone/tablet app or PC via web browser. Love it! 15 July 2014
Rated 5 out of 5 by What can I say other than brilliant! I have had the scales for just over six months now and they are easy to set up, I set mine up in minutes. They are very accurate and when I step on the scales they record the data and sync to all my devices my iPhone my iPad myfitnesspal and the withings website too. They are really easy to use and have been reliable and its good looking back at the data and the graphs to see where you are they really motivate me. I think withings have got it right with these scales. If you like technology you will love these 11 May 2014
  • 2015-12-15 T15:55:24.092-06:00
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  • 2 year guarantee included

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