Test here if your Website is Mobile Friendly. This Tool is provided by GOOGLE.
Google recently announced that it will rank websites by mobile friendly criteria.
If your Site is Mobile Friendly it will help in Search Engine Results, if not Mobile Friendly the Ranking will be lower. (according to Google)

Google Gives Mobile-Friendly Sites a Boost in Search Ranking.
As more and more users view websites on mobile devices, Google wants to make it easier to find relevant, mobile-optimized websites. To this end, Google will now use mobile-friendliness as a factor in ranking search results.

To make your website mobile-friendly, Google suggests taking the following steps:

1. Visit Google’s guide to mobile-friendly sites. This page offers several ways to make your site more mobile-friendly, such as by using software or a third-party developer.
2. Take Google’s Mobile-Friendly Test(top of this Page) to see how optimized your website is for mobile viewing. You can test a single page on your site or several webpages and see exactly how Google’s own Googlebot views the pages when determining search results.
3. Use Webmaster Tools to generate a Mobile Usability Report, which helps identify any issues with your website when viewed on a mobile device.

Test your Website here

In some Cases it is easy to convert your Site to Mobile Friendly. Contact me if you need some help.