The cash conversion cycle measures how many days it takes a company to convert its investments in inventory and other resources into cash flows from sales. It combines three efficiency metrics: how long inventory sits before being sold (DIO), how long receivables take to collect (DSO), and how long the company can delay paying its own suppliers (DPO).
A shorter CCC means the company converts inventory to cash faster and can reinvest that cash sooner. A negative CCC — common for companies like Amazon and Dell — means the company collects cash from customers before it has to pay its suppliers, effectively using supplier financing to fund operations.