For body composition metrics: 10 to 100 years old.
Anyone can use Wyze Scale BodyScan to take their weight measurement, no matter their age. Body composition (Body Fat %, Water %, etc.) is only available for people between the ages of 10 and 100 years old. Children under 10 and seniors over 100 will not be able to access body composition features. For users between 10-17, body composition data is only for reference.