The Days To Sell Inventory (DSI) Formula is an important metric used to measure the effectiveness of a company’s inventory management. It measures the number of days it takes for a business to turn its inventory into cash flow, allowing businesses to gain insight into their operating efficiency. In a nutshell, it’s an important formula used by businesses to assess and understand how quickly they are able to manage their inventory and convert it into sales. With the help of this formula, businesses can determine their optimal inventory levels in order to best meet consumer demand while maximizing profitability.