What is the ideal keyword density? The answer is vary. Most people say between 5% to 8% of your total single keyword would be ideal. Different type of site may require different keyword density. Some keywords appear as phrase. Some appear as single word. Our keyword density checker tool will detect one to three words keyword. With our free keyword density checker tool, you can check your web-site keyword density in real time. Simply enter your web-site URL and we will analyze the keyword density on your web-site.