Set up Body Scan through the Withings app and the supplied Quick Start Guide, make sure your app profile is accurate, then take readings barefoot and follow the on-screen sequence. Body composition and vascular readings are estimates for wellness tracking, not diagnoses; technique, hydration, and feature availability can affect what you see.
Set up the scale and take your first measurement
- Install the Withings app and add Body Scan. Create or sign in to your account, then follow the supplied Quick Start Guide to add the scale. Use the app when prompted to connect it to a trusted Wi-Fi network. Withings directs users to that guide for installation details: Withings app and setup information.
- Check your profile. Confirm that the user’s height, gender, and age are entered correctly in the app. Withings says incorrect profile details can affect body-composition results: Body Scan body-composition troubleshooting.
- Step on barefoot. The scale identifies the user by the name or trigram configured in the app. The first weight reading does not require holding the handle. After identification, the scale runs the measurement sequence configured in the app: Withings Body Scan product guide.
- Activate optional features as needed. For ECG, use the app’s feature-activation flow, review and accept the instructions, select Activate, and synchronize. Withings says ECG should appear at the next weigh-in or after routine overnight synchronization. Availability depends on country and activation: Withings ECG activation instructions.
- Choose the screens and sequence you want. Customize the on-scale screens in the app. If synchronization fails, check that the scale has battery power, appears under Devices, and is within range of working Wi-Fi. The product guide documents restarting the scale by holding its button for 20 seconds: Withings Body Scan product guide.
Get a repeatable body-composition reading
For body composition, use the retractable handle and its left/right markings. Place your thumbs on the handle’s top electrodes, stand barefoot on the platform, and remain still. Keep your hands and arms away from your torso, avoid letting your thighs touch, and remove rings or hand accessories. Keep skin contact clear: skin touching skin can interfere with the measurement.
As an Amazon Associate I earn from qualifying purchases.
Take readings at a consistent time and under similar conditions. Hydration and ordinary day-to-day changes can shift body-composition estimates; Withings recommends avoiding food or drink for up to two hours before measurement. Feet and hands should be dry, but very dry skin or calluses can make electrode contact harder. Withings suggests that measuring after a shower may help if dry feet are preventing adequate contact. Follow its troubleshooting directions if a reading is inconclusive: body-composition troubleshooting.
Free tools Windows power users keep installed
One-click scans. No signup required.
Why a body-composition result may be inconclusive
- The handle was not used, or the hands were not positioned correctly on the electrodes.
- The user profile has incorrect age, height, or gender details.
- Skin contact, movement, dirty or scratched scale surfaces, dry feet, or calluses disrupted the signal.
- The scale is set to Weight-Only or Pregnancy Mode, which disables body-composition measurement.
Withings’ original troubleshooting page lists successful-reading ranges of age 16–89, height 90–249 cm, and weight 29–270 kg. A separate Withings tutorial gives an age floor of 18, so the company’s published pages conflict on the age threshold; check current device and app guidance rather than relying on one universal minimum-age figure.
#1 Best Overall
- A CLINICAL SCAN OF YOUR HEALTH - Body Scan, developed in collaboration with leading hospitals and clinical institutions, has been clinically validated.
- INCREASE YOUR MUSCLE MASS FASTER - Use the scale handle to precisely locate muscle imbalances and excess fat in the arms, legs, and torso.
- DETECT A CARDIAC ANOMALY - Use the electrocardiogram to identify any signs of atrial fibrillation, the most common form of cardiac arrhythmia.
- EVALUATE THE NATURAL PROTECTIVE FUCTION OF THE SKIN - Assess sweat gland activity in the feet to evaluate the natural protective function of the skin, all within seconds.
- MONITOR YOUR CARDIOVASCULAR HEALTH - Every day analyze the condition of your arteries with our revolutionary assessment that measures arterial stiffness, a significant contributor to hypertension.
What Body Scan’s measurements mean
Weight and BMI
Body Scan measures weight and calculates BMI from weight and profile information. BMI is a calculation, not a direct measurement of body fat or a diagnosis. Use it as one limited indicator rather than as a complete description of health: Withings Body Scan product guide.
Segmental body composition
The platform and handle electrodes are used to estimate composition across body regions. These are estimates, not direct readings of each tissue type. Hydration, posture, skin contact, and profile inputs can affect them. For useful tracking, compare readings taken with similar technique and conditions instead of drawing conclusions from one result.
Rank #2
- THE ULTIMATE BODY ANALYZER - Body Scan is our most precise smart scale, for faster fitness improvement.
- INCREASE MUSCLE MASS FASTER - Precisely locating areas of muscle imbalance or excess fat may help to increase muscle mass faster.
- ACHIEVE FITNESS GOALS FASTER - Follow consistent and precise weight measurements (50 g / 0.1 lb), and track your weight trend on the scale’s high-visibility color screen or in the app.
- MONITOR CARDIOVASCULAR HEALTH - Estimates the age of your arteries to give a clearer picture of your heart health by understanding how well your heart and blood vessels are functioning.
- FOLLOW YOUR HEART - Evaluate your heart rate at every weigh-in, a good indicator of overall cardiovascular fitness.
Heart rate and ECG
The scale includes pulse-rate measurement and ECG electrodes, but ECG must be activated where the feature is available. For a recording, hold the handle in the marked left/right orientation and maintain electrode contact for the 30-second measurement. Stand still; do not speak, move, wear jewelry, grip too tightly, or allow skin-to-skin contact. Follow the app’s instructions for your location and device configuration: Withings ECG instructions.
Pulse-wave velocity and vascular age
Withings says pulse-wave velocity (PWV) is available only on Body Scan scales purchased in Europe. PWV and vascular age use different category thresholds, so their labels can disagree near a boundary. Vascular age compares a result with other Body Scan and Body Cardio users; Withings describes it as a wellness indicator that cannot predict an individual’s absolute cardiovascular-disease risk: Withings explanation of vascular age.
Rank #3
- A CLINICAL SCAN OF YOUR HEALTH - Body Comp, developed in collaboration with leading hospitals and clinical institutions, has been clinically validated.
- INCREASE YOUR MUSCLE MASS FASTER - Use the scale handle to precisely locate muscle imbalances and excess fat in the arms, legs, and torso.
- DETECT A CARDIAC ANOMALY - Use the electrocardiogram to identify any signs of atrial fibrillation, the most common form of cardiac arrhythmia.
- EVALUATE THE NATURAL PROTECTIVE FUCTION OF THE SKIN - Assess sweat gland activity in the feet to evaluate the natural protective function of the skin, all within seconds.
- MONITOR YOUR CARDIOVASCULAR HEALTH - Every day analyze the condition of your arteries with our revolutionary assessment that measures arterial stiffness, a significant contributor to hypertension.
Nerve Health Score
The Nerve Health Score is based on galvanic skin response, which Withings describes as a measure related to sudomotor function. Results can vary with conditions, and the scale may prompt a Guided Scan. If prompted, follow the specific preparation: have been on your feet during the preceding hour, remove shoes shortly before scanning without having been barefoot for more than 10 minutes, and keep both the scale and feet free of dust. Medication containing anticholinergic agents and alcohol in the prior 24 hours may affect this score: Withings Guided Scan instructions.
SpO2 and feature availability
The screens and measurements offered can vary by geography and activated settings. Check the screens shown in your app and on your scale rather than assuming every Body Scan provides every feature in every country: Withings Body Scan product guide.
Rank #4
- A CLINICAL SCAN OF YOUR HEALTH - Body Smart, developed in collaboration with leading hospitals and clinical institutions, has been clinically validated.
- ACHIEVE YOUR WEIGHT GOALS FASTER - Reliably track your weight to within 50 g and view your weight trends directly on the scale's high-resolution color display.
- INCREASE MUSCLE MASS FASTER - Increase muscle mass faster by analyzing body composition to tailor efforts.
- FOLLOW YOUR HEART - Evaluate your heart rate at every weigh-in, a good indicator of overall cardiovascular fitness.
- BOOST YOUR METABOLISM - Boost your metabolism by estimating the energy your body needs every day.
Safety and appropriate use
Withings says not to use Body Scan if you have a cardiac pacemaker, implantable cardioverter-defibrillator, or another implanted electronic device. Pregnancy can affect accuracy; consult a doctor, and Withings support recommends disabling impedance-based body-composition measurement during pregnancy. The user guide also warns that measurements may be affected by lower-limb amputation beyond the toes, and says not to use the scale with wet hands or feet. For health concerns, discuss readings with a clinician rather than diagnosing or treating yourself; Withings’ safety notice states, “Self-diagnosis and self-treatment can be dangerous.” Withings product guide and safety information.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesQuick Recap
Best Value
- FSA/HSA eligible
- See Your Progress Instantly: View segmental analysis, trends, and progress directly on the 4.3" TFT handle display of this smart scale—no phone needed after every scan. (Pair with the RENPHO Health App via Bluetooth before your first measurement.)
- Train Smarter with Deeper Insights: 8-electrode dual-frequency segmental BIA on this body fat scale reveals muscle and fat changes across different body areas, helping guide workouts, nutrition, and long-term health management.
- Turn Data into Action: Track 50+ body metrics, including segmental muscle and fat analysis, on this body composition scale to better understand training results, personalize nutrition plans, and support weight management and healthier habits.
- Guided for Every Measurement: Voice guidance walks you through every scan on the RENPHO MorphoScan Nova, ensuring consistent, accurate measurements for long-term health tracking.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
