I have a large weight difference when I weigh myself, why? Follow Be sure to weigh yourself on a flat, hard surface (wood or tile type). Please don’t weigh yourself on carpet or a rug. Was this article helpful? 0 out of 4 found this helpful Have more questions? Submit a request Return to top Related articles My body masses have not been transmitted to the application, why? How to pair my Web Coach WEB COACH FIT - Instruction Manual The weight displayed on my scale seems inconsistent How many smartphones can be synchronized with Terraillon scales? Comments 0 comments Article is closed for comments.