Supply management systems for a supply item. The supply management systems include a weight detector, an item identifier, a platform, and a computer. The weight detector is configured to detect a current weight of the supply item. The item identifier is configured to identify the supply item. The platform is supported on the weight detector and configured to support the supply item. The computer is in data communication with the weight detector and the item identifier. The computer is configured to receive supply item identifier data; identify the supply item; store a reorder threshold weight value; receive the current weight of the supply item; dynamically compare the current weight with the reorder threshold weight value; and update a supply status of the supply item to indicate that a reorder threshold has been reached.