# Measure units Allows you to access the system measure unit. These units are convertible to each other and cannot be redefined or extended. For defining/extending your own units use [Units](#tag/units) in the **Settings** section. ## List of products measure units - [GET /api/products/measure-units](https://api.docs.shoptet.com/shoptet-api/openapi/measure-units/getlistofproductsmeasureunits.md): Returns the list of product measure units within the e-shop.