Smart scales finally get interesting

The smart scale market has exploded after years of stagnation, driven by the GLP-1 craze as millions of consumers track whether their weekly injections are working.

What modern smart scales can do

Today's smart scales measure heart rate, break down muscle composition, and some include integrated ECG systems to monitor heart health. Mobile apps track all this information over time.

Full-body scanners change the game

New full-body scanners use handlebar-based sensors to scan through both feet and hands, not just feet. This gives a more holistic view of body metrics than floor scales alone.

Full-body scanners read higher

Body fat percentage numbers can swing up to six percent between full-body scanners and standard floor scales. The full-body scanner data is always higher.

“The full-body scanner data is always higher.”

Trend matters more than precision

The trend line matters most, not absolute numbers. As long as your metrics head in the right direction, small percentage differences don't matter much.

Consistent weigh-ins are key

Consistent weigh-ins and tracking information over time determine whether your diet, workout regimen, or medication routine is getting you the results you need.

Prices are climbing fast

Scale prices are headed up, with new full-body scanners now topping six hundred dollars for top-tier tech. Standard scales remain considerably less expensive.

Standard scales still recommended

A standard scale is still recommended for most users because these devices are considerably less expensive and results are likely good enough for all but serious athletes.

How smart scales work

Smart scales come in two types: Bluetooth, which connects directly to your phone, and Wi-Fi, which syncs to the cloud. Wi-Fi scales are generally more expensive but more versatile.

Bioelectrical impedance analysis explained

Virtually all smart scales use bioelectrical impedance analysis, which sends a minuscule electric current up one leg and measures what happens when it comes down the other side.

Best time to weigh yourself

Most experts say the best time to weigh in is first thing in the morning, before eating and after using the restroom. This ensures consistency and apples-to-apples comparisons.

Best overall: Withings Body Comp

The Withings Body Comp costs two hundred thirty dollars and measures weight, heart rate, fat and muscle, vascular age, and electrodermal activity. It has a bright color display and mature app.

Runner-up: Etekcity EFS-A591S-KUS

Etekcity's scale costs eighty dollars and offers Wi-Fi connectivity, a bright color display, and tracks fourteen biometrics. It supports multiple users and connects to Alexa devices.

Best budget: Wyze Scale X

The Wyze Scale X costs forty dollars and is Bluetooth-only. It displays weight on an LED screen and tracks thirteen metrics including muscle mass, visceral fat, and BMR measurements.

Best full-body scanner: Withings BodyScan 2

The Withings BodyScan 2 costs six hundred dollars and offers daily scans plus a weekly longevity scan measuring sixty metrics. It includes a six-lead ECG that can help detect AFib.

BodyScan 2 longevity scan details

The ninety-second longevity scan measures blood oxygen level via thumb scanner, nervous system response, and heart health estimate. A cardiologist reviews ECG results before they appear.

Renpho MorphoScan Nova alternative

The Renpho MorphoScan Nova costs two hundred dollars and offers a sleeker glass base than the standard MorphoScan. It includes voice prompts and an upgraded BIA sensor.

Scales to avoid: Renpho Lite

The Renpho MorphoScan Lite costs ninety-five dollars but ditches Wi-Fi and the handheld display. It is one of the flimsiest scales tested, too lightweight to extend handlebars properly.

Scales to avoid: Tanita RD-545

The Tanita RD-545 InnerScan Pro costs four hundred eighty dollars but is confusing to set up and difficult to use correctly. It offers forty measurements but no Wi-Fi at this price.

“No Wi-Fi at this price, really?”