Click "Start speed test" to begin testing the speed of your data connection. The speed test will start by downloading a file from the server closest to you. During the download of this file the test will determine the speed at which the file is downloaded in mega bits per second.
Upload Speed Test
Once the speed test is done determining the download speed, it will then begin a speed test of your upload speed. This speed test is done by sending a file to the speed test server and this test is also measured in mega bits per second. For best results make sure no other programs or devices are using your internet connection during the speed test.
Speed Test Servers
Servers for the speed test are located in Ashburn (VA), Dallas/Fort Worth (TX), Los Angeles (CA), Miami (FL), Newark (NJ), Palo Alto (CA), Seattle (WA), St. Louis (MO) with the one closest to your location conducting the speed test.