1.Enter your full website URL and some optional parameters in the form below. 2.Press 'Start' button and wait until the site is completely crawled. 3.You will be redirected to the generated sitemap details page, including number of pages, broken links list, XML file content and link to a sitemap file. 4.Download the sitemap file using that link and put it into the domain root folder of your site. 5.Go to your Google Webmaster account and add your sitemap URL.
Go to xml-sitemaps(dot)com website and enter your website full URL and your website sitemap will be generate automatically. This site is free site but only for 500 page after that you have to switch on its pro service.