United Microelectronics Operating Cash Flow to Sales Ratio is 38.88% for the quarter ending March 31, 2024, a -21.84% change year over year. The operating cash flow to sales ratio measures the proportion of a company's operating cash flow to its total sales revenue. It is calculated by dividing the operating cash flow by the revenue. This ratio indicates the company's ability to convert its sales revenue into operating cash flow, reflecting its operational efficiency and cash generation capabilities. A higher ratio suggests a higher level of cash flow generated from sales, indicating strong profitability and effective cash management.