Simple steps to check the density When you complete the replace function, the system will provide a count of the words you replaced. That gives the number of times you have used the keyword in that page. Using the total word count for the page and the total number of keywords you can now calculate the keyword density. Copy and paste the content from an individual web page into a word-processing software program like Word or Word Perfect. Go to the ‘Edit’ menu and click ‘Select All’. Now go to the ‘Tools’ menu and select ‘Word Count’. Write down the total number of words in the page. Now select the ‘Find’ function on the ‘Edit’ menu. Go to the ‘Replace’ tab and type in the keyword you want to find. ‘Replace’ that word with the same word, so you don’t change the text.