The Google Indexed Pages Checker provides quick access to the number of web pages indexed from any given site. Simply enter your URL, and this tool will render the number of Google-indexed pages in a flash.
You can also check to see how many pages are indexed from a competitor's website. It's a great way to monitor your Google SEO efforts and determine what percentage of all your site's pages are actually listed in the search engine. For example, if you have 1,000 pages within your site, but only 250 are indexed, then you'll have an idea of the success level of your methods and can make improvements for the future.