Smart scales can provide a lot of data before just a regular scale, and in a way that the average user can easily read it, but how exactly do they work?

The number on the scale does not tell the whole story. Your body weight does not account for your body fat, muscle mass and bone density, and will not tell how much of it is due to water retention or ...

This means that smart scales can give you more insights into your health than Body Mass Index (BMI), a calculation that uses only your weight and height. "Having a BMI of 30 or above, for example ...

If you're new to smart scales, they are a clever bit of kit that can give insight into not just your weight, but also other body composition statistics, including muscle mass, body fat and more.

Even medical professionals use BMI to assess health risks associated with obesity, excess or low weight. This calculator computes your body mass index based on your gender, age, height and weight.