Operating margin
（重定向自Return on Sales）
In business, operating margin — also known as operating income margin, operating profit margin and return on sales (ROS) — is the ratio of operating income ("operating profit" in the UK) divided by net sales, usually presented in percent.
![\mathrm{Operating\ margin} = \left ( \frac {\mathrm{Operating\ income}}{\mathrm{Revenue}} \right )](/Images/godic/202502/07/e52e2300b45efd490a844514f6223adc0006.png")
Net profit measures the profitability of ventures after accounting for all costs.