A size measurement device, management server, user terminal and size measurement system are provided which allow easy measurement and can be easily handled even by a user with no professional measuring technique. This size measurement system comprises: size measurement device 10 which is worn by the user to measure the user's body size, and which outputs sensor measurement information representing the measured size, etc.； a user terminal 20 which is operated by the user whose body is to be measured； and a management server 30 which manages information about the size and shape of apparel products and, on the basis of the sensor measurement information, provides the user terminal 20 with user size information, which is information about the user's body size, and product search result information, which is information about a product that fits said size.本發明的課題，係提供即使沒有專門採量尺寸技術的使用者也可簡單使用，可容易進行採量尺寸之尺寸測定裝置、管理伺服器、使用者終端及尺寸測定系統。 本發明的解決手段是一種尺寸測定系統，係具有裝配於使用者的身體來測定使用者的身體尺寸，並輸出表示該測定之尺寸等的尺寸測定資訊的尺寸測定裝置(10)、測定身體的使用者所操作的使用者終端(20)、及管理服裝系商品之尺寸及形狀的資訊等，依據該感測器測定資訊，將適合使用者之身體尺寸的資訊即使用者尺寸資訊及適合該尺寸之商品的資訊即商品檢索結果資訊提供給使用者終端(20)的管理伺服器(30)所構成。
