Return on Capital Employed (ROCE) is a measure of how much money a company makes from the money it has invested. It's a way to measure how efficient and effective a company is at turning its investments into profits. To calculate ROCE, you take the company's profits, divide it by the amount of capital the company has invested, and then multiply it by 100. This will give you the ROCE as a percentage. For example, if a company's profits are $100 and it has invested $200 in capital, then the company's ROCE would be 50%.