Gross profit margin
Gross profit / revenue
Operating margin
Operating profit / revenue
Return on capital employed
Operating profit / equity + net debt
Current ratio
Current assets / current liabilities
Quick ratio
Current assets (less inventory) / current liabilities
Gearing ratio
Net debt / equity
Interest cover
Profit less interest paid / interest paid
Trade receivables collection period
Trade receivables / revenue x 365
Inventory holding period
Inventory / cost of sales x 365