This conversion means 1.0 Mbps is more than 1,000 times faster than 1.0 kilobits per second (Kbps). The speed of this data is measured in megabits per second (Mbps). Internet speed refers to the speed which data or content travels from the World Wide Web to your home computer, tablet, or smartphone. What is Internet Speed and How is Internet Speed Measured? You can determine the approximate speed of your Internet connection by taking the Speed Test from Xfinity which will generate a report on your Internet download speed and upload speed. If you are asking yourself, “how fast is my Internet,” 'internet speeds explained,' or “ what are my Internet speeds,” look no further. Learn what factors affect your Internet speed, the difference between Mbps vs Kbps, and use our speed test to find out your speeds.