gross profit margin
(gross profit / sales revenue) x 100
operating profit margin
(operating profit / sales revenue) x 100
net profit margin
(net profit / sales revenue) x 100
ROCE
operating profit / capital employed) x 100
working capital
current assets - current liabilities
current ratio
current assets / current liabilities
acid test ratio
(current assets - inventory) / current liabilities
gearing ratio
(long term liabilities / capital employed) x 100