Reuters is one website that offers company ratios. It also allows you to compare company to industry and sector ratios. To find these ratios, type in a company name or ticker symbol, click on the correct ticker symbol, and click on the financials tab. You can find P/E ratio, P/E high (last 5 years), P/E Low (last 5 years), Price to Sales, Price to Book, Price to Cash Flow, Dividend Yield, Payout ratio, Quick Ratio, Current Ratio, EBITC.
MSN also offers company ratios. It allows you to compare company to industry and S&P 500 ratios. To find these ratios, type in a company name or ticker symbol next to 'get quote', click on 'key ratios' on the left side of the screen.
Provides around 100 industry ratios.