Whenever you want to check your SEO performance when you are doing SEO for your site, you can easily verify your sites SEO condition.
You will easily find a lots of tools to analyze SEO in Google.com. But most of them are paid tools. So for beginner free SEO tools are more helpful.
I usually use the following tool to analyze my SEO of my websites.
SEO Analyzer Checker
Advanced seo analyzer tool to give webmasters an in-depth seo analysis of their websites seo ranking on a page-by-page basis. This seo test tool analyse not only your seo status, but also the website social media ranking, site usability, online reputation, meta tags, and site speed. Examine your webpage and get instantaneously your analysis report together with your rankings from this seo check tool. Improve your web page content and increase your search engine ranking.