Bathroom scales are fickle devices. They can give you a different weight from day to day, or even moment to moment. Sure, the human body fluctuates over the course of the day and there are some crappy scales out there, but even relatively good scales can seem to be wildly inaccurate.
We’ve seen complaints alleging that our pick for the best bathroom scalesometimes reports that the user has lost or gained as much as 10 pounds within a matter of minutes. But, after testing the scale in our homes for over a year, we’re standing by it. Here’s why.
Bathroom scales meant for home use display your weight with a dial or on a digital screen. These scales measure your weight in one of two ways: mechanically, with springs, or electronically, with circuits that bend under weight, altering the current coursing through them. In general, digital bathroom scales are more accurate than mechanical ones. But for the most accurate reading, any bathroom scale must be set up correctly and used consistently.
Excerpted from Wirecutter