Days Working Capital is a company's working capital described as the number of days it takes for a company to convert its working capital into revenue. This number is a key metric for companies that are interested in the sustainability of how much revenue they could potentially generate in the future. It is important to consider this metric when considering whether or not to invest in a new marketing strategy.The days working capital describes how many days it takes for a company to convert its working capital into revenue. The more days a company has of working capital, the more time it takes to convert that working capital into sales. Days working capital vary from company to company and is typically a two-digit number.