If you have Windows 8.1 or 10 this is a great (and free) app from Microsoft to test how fast your internet connection really is.

Quite often I hear from my clients that their High Speed Internet isn't really high speed since it's so slow to open web pages. Running this test will show your actual download and upload rate which you can then compare to what your internet provider says you should be getting. Sometimes web pages can load slow because your computer just might be slow or because the web site you are visiting is having some issues of their own. Before you call your internet provider run this test a few times and then you'll have some real ammunition if the number are off.

Download it from the Windows Store at:
Network Speed Test (https://www.microsoft.com/store/apps/9wzdncrfhx52)