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Smart scales measure multiple metrics of body composition — not just your weight.

Typically, they use bioelectrical impedance analysis (BIA), which is a noninvasive tool that evaluates your body composition by sending a weak electrical current through your body (1).

A snapshot of your body composition may be especially useful if you’re hoping to build muscle mass or decrease body fat. However, the large smart scales market makes it challenging to determine which products are worth their price tag.

The smart scales featured in this article were selected based on the following criteria:

  • available measurements
  • value
  • connectivity
  • additional features
  • customer reviews

Here are 6 of the best smart scales of 2021.

Best overall

Eufy Smart Scale P1

Price: $

With its slim and stylish design, simple setup, and user-friendly app, the Eufy Smart Scale P1 takes the top slot as the best smart scale on the market.

It provides 14 unique measurements of body composition, including your weight, lean body mass, body fat mass, muscle mass, and basal metabolic rate (BMR), which is an estimate of how many calories you burn throughout the day.

It also allows you to track health data for up to 16 users on a single account and syncs with several third-party fitness apps using Bluetooth.

Best high end

QardioBase 2

Price: $$$

This sleek smart scale is easy to set up, packed with features, and worth the investment if you’re looking for a top-of-the-line option.

In addition to measuring your weight, it tracks other metrics of body composition, including your body fat percentage, bone and muscle mass, and body water percentage.

It’s also compatible with many popular health apps and connects with both WiFi and Bluetooth to easily transmit your data.

Plus, it’s fully rechargeable and can last up to 12 months on a single charge.

Best value


Price: $

This affordable smart scale provides an in-depth look at your body composition with 13 different measurements, including visceral fat, subcutaneous fat, metabolic age, skeletal muscle, and body mass index (BMI).

It also offers easy integration with many health apps, includes Bluetooth connectivity, and lets you store data for unlimited users.

What’s more, it has a wide, stable platform for comfort and safety and features a large LED display so you can view your measurements clearly.

Best with app

Fitbit Aria 2 Wi-Fi Smart Scale

Price: $$

The Fitbit Aria 2 WiFi Smart Scale is a high tech scale that syncs with the Fitbit app to monitor your health.

It not only measures your weight, body fat percentage, BMI, and lean body mass but also tracks long-term trends using charts and graphs on the app.

On the Fitbit app, you can also set goals, measure your hydration, and record your activities and food intake.

The scale auto-syncs data for up to eight users and keeps individual stats private, making it a great option for large families or households.

Best with WiFi

Withings Body+

Price: $$

This WiFi-enabled smart scale syncs automatically with over 100 popular health and fitness apps.

It measures your weight within 0.2 pounds (100 grams) and monitors your body fat percentage, water percentage, bone mass, and muscle mass.

Plus, it includes nutrition tracking and features suitable for everyone in the family, including modes specifically for pregnant people and babies.

It also allows up to 8 users and boasts an extra long battery life of up to 18 months.

Best features

FITINDEX Bluetooth Body Fat Scale

Price: $

With 13 essential measures of body composition, this scale from FITINDEX not only helps you keep tabs on your weight but also monitors your body fat, bone mass, skeletal muscle, visceral and subcutaneous fat, and more.

It includes Bluetooth connectivity and works with the FITINDEX app, as well as third-party apps like Apple Health, Google Fit, and Samsung Health.

Additionally, it permits unlimited users, making it a cost-effective and convenient option for families.

There are a few key factors to consider when shopping for a smart scale.

For starters, determine which measures of body composition are most important to you. Some of the most commonly measured metrics include:

  • body weight
  • body fat percentage
  • bone mass
  • muscle mass
  • BMI
  • BMR
  • body water percentage

You should also find a smart scale that works well with your favorite fitness apps and determine whether it offers Bluetooth or WiFi connectivity.

Be sure to also consider the price, power source, and maximum number of users.

Smart scales can be a useful tool for measuring several metrics of body composition.

When selecting a smart scale, consider which features it offers, as well as the price, power source, maximum number of users, and connectivity options.

You can also use this list to help you find the best product for you.