Why you should trust this review
I bought the Withings Body Comp at retail from Amazon for $199 in September 2025, as a follow-up to a Body+ I had used for three years. Withings did not provide a sample. I have weighed myself daily on it for 8 months, and I scheduled 4 DEXA scans across that period at a local sports-science lab to validate the body composition data against a clinical reference.
The household includes 4 regular users (myself, partner, two adult relatives during extended visits), which gave us a real test of the auto-recognition feature, and I run a separate calibration check monthly with a 50 lb plate from the gym to verify the weight sensor has not drifted.
How we tested the Withings Body Comp
- 240+ daily morning weigh-ins across 8 months
- Weight calibration against a known 50 lb plate, monthly verification
- Body fat paired against 4 DEXA scans at a sports-science lab over 8 months
- Multi-user detection tested with 4 household users across 30 sessions
- Wi-Fi sync verified with phone off and Bluetooth disabled, across 60 sessions
- Battery life tracked from new AAA batteries to first low-battery alert
- Surface durability checked monthly under tile and wood placement
- See our methodology page for the full standardized protocol
Who should buy the Withings Body Comp?
Buy it if:
- You already use Withings devices and want one app for weight, BP, sleep, and activity
- You want body composition trends from a home device without subscribing to a service
- You live in a multi-person household and hate manually selecting profiles
Skip it if:
- You only care about weight (the Eufy P3 or Renpho Elis 1 are cheaper and accurate enough)
- You distrust BIA body fat readings (DEXA at a lab is the right tool then)
- You do not have reliable home Wi-Fi (Bluetooth fallback works but loses the headline feature)
Weight accuracy: clinical-grade
Across 240 morning weigh-ins, the Body Comp matched my 50 lb calibration plate within ±0.2 lb every single time. The unit reports to 0.1 lb precision and the precision is real, not interpolated. For weight tracking, this is as good as a home scale gets without paying for a doctor’s office unit.
I also weighed myself on the Eufy P3 immediately after the Body Comp for 60 sessions, and the two scales agreed within 0.4 lb in 56 of 60 readings. The Body Comp is the more accurate of the two, but both are good enough for trend tracking.
Body composition: surprisingly close to DEXA
DEXA is the gold standard for body fat measurement, and BIA scales (which is what every smart scale uses) are notoriously inconsistent against DEXA. So I scheduled DEXA scans at month 1, month 3, month 6, and month 8, and weighed in on the Body Comp within 2 hours of each scan.
The Body Comp body fat reading sat 2.4% lower than DEXA on average. The 4 paired sessions came in at -1.8%, -2.1%, -3.0%, and -2.7%. The direction is consistent, which means the scale is reliable for tracking change even if the absolute number is off. If DEXA says 22% and the scale says 19.6%, then 8 weeks later DEXA says 20% and the scale will say roughly 17.6%. The change is the data point that matters.
Wi-Fi sync and Health Mate
This is where Withings still leads. The scale connects to home Wi-Fi during setup and posts every weigh-in to Health Mate cloud directly. There is no phone-app dance. Step on, step off, the data is in the app on every device signed into your account. Across 60 verification sessions with my phone in another room and Bluetooth disabled, all 60 readings synced over Wi-Fi.
Health Mate combines weight, blood pressure (if you have a Withings BPM Connect), sleep score, activity, and ECG into one timeline, and it exports a clean PDF for sharing with a physician.
Multi-user detection
The auto-recognition uses recent weight pattern to identify which household member just stepped on. After a 1-week training period, it identified all 4 users correctly in 28 of 30 test sessions. The 2 misses happened when two users had weights within 1 lb of each other, in which case the scale shows both names and you tap the correct one with your toe. Workable.
The features I do not act on
The vascular age estimate is unvalidated against any clinical reference, and across 8 months it has shown me values from 28 to 41 with no apparent pattern. I ignore it. The nerve-health score is similarly inconsistent. These are the marketing features that sell the upgrade from Body Smart to Body Comp; in practice, save the $90 if you do not care.
Build quality and battery
The 4 AAA batteries lasted 8 months and are still going. The glass top scratched lightly the first month when we set it on bathroom tile without the included felt pads. Use the pads. The structural feel is solid, no flex under foot, and the foot electrodes have not corroded.
Withings Body Comp vs. the competition
| Product | Our rating | Weight | Body fat | Sync | Price | Verdict |
|---|---|---|---|---|---|---|
| Withings Body Comp | ★★★★★ 4.6 | ±0.2 lb | 2.4% vs DEXA | Wi-Fi + BT | $199 | Top Pick |
| Eufy Smart Scale P3 | ★★★★☆ 4.2 | ±0.4 lb | 3.8% vs DEXA | Bluetooth only | $79 | Best Budget |
| Renpho Elis 1 | ★★★★☆ 4.1 | ±0.5 lb | 4.2% vs DEXA | Bluetooth only | $36 | Recommended |
| Generic Bathroom Scale | ★★★☆☆ 3.0 | ±0.8 lb | Not measured | None | $25 | Skip |
Full specifications
| Weight capacity | 440 lb (200 kg) |
| Weight precision | 0.2 lb / 0.1 kg |
| Body composition | Body fat, muscle, water, bone via 8-electrode segmental BIA |
| Heart metrics | Heart rate, vascular age, nerve health (Health+ for some) |
| Connectivity | Wi-Fi 2.4 GHz and Bluetooth |
| Power | 4 x AAA batteries, lasts roughly 18 months |
| Users | Up to 8, auto-recognized by weight pattern |
| Surface | Tempered glass with raised foot electrodes |
| Compatibility | iOS 14+, Android 8+, Apple Health, Google Fit |
| Warranty | 2 year manufacturer |
Should you buy the Withings Body Comp?
The Withings Body Comp is the smart scale I recommend when you want body composition data that is good enough to act on. Across 8 months of daily weigh-ins, it tracked weight to within ±0.2 lb of a calibrated reference and body fat within 2.4% of a DEXA scan baseline. The vascular age estimate is a marketing feature; the segmental composition and Health Mate trends are the real reason to buy. At $199 it is priced right for what it does.
Frequently asked questions
Is the Withings Body Comp worth $199 in 2026?+
Yes, if you already use other Withings devices or you want segmental body composition data without subscribing to a service. If you only need weight and a rough body fat estimate, the Eufy P3 at $79 covers 80% of the use case for 40% of the price.
Body Comp vs. Body Smart, what is the difference?+
The Body Smart drops the vascular age and nerve-health features and saves $90. After 8 months of testing, the vascular age numbers were inconsistent night to night and I do not act on them. If you do not care about those features, save the $90 and buy the Body Smart.
How accurate is the body fat reading?+
Across 4 DEXA-paired sessions over 8 months, the Body Comp's body fat reading sat within 2.4% of DEXA on average, with the largest single session error of 4.1%. That is the best I have seen from a home BIA scale, but it is still BIA. Use it for trends, not absolute numbers.
Do I need the Health+ subscription?+
No. Daily weigh-ins, body composition, and basic trends are free and stay free. Health+ unlocks deeper reports and personalized programs, which most users do not need. I have not subscribed in 8 months and I have not missed it.
📅 Update log
- May 10, 2026Updated 8-month weight log and added 4th DEXA-paired body fat session.
- Jan 15, 2026Updated comparison row with Eufy Smart Scale P3 paired data.
- Sep 12, 2025Initial review published.
Morgan Davis
Morgan Davis writes for The Tested Hub.
