It's important to understand that different internet speeds are necessary for different usage scenarios. So when you test internet speed,"How fast is my internet?" can only be answered in relation to what you want to use the connection for. While simply browsing the web can be achieved with low single-digit megabit per second speeds, streaming Netflix in 4K resolution will need at least a 25Mbps connection speed. Online gaming will primarily be influenced by your ping, with a smaller ping being better while publishing content on the web, like uploading large videos to Youtube will be primarily constrained by your upload bandwidth. An internet speed test measures the connection speed and quality of your connected device to the internet. It does so by running multiple consecutive tests that analyze different aspects of your internet connection, namely ping (latency), download speed, and upload speed.
The speed at which your device can receive data from the internet. It's calculated by dividing the total throughput of data in a given time frame by its duration. Therefore its unit is denoted by units of data over time. Most often, download speed is denoted in Megabits per second (Mbps or Mb/s), although other forms like Kilobits per second (Kbps or Kb/s) or Megabyte per second (MBps or MB/s) are also common
As opposed to download speed, upload speed characterizes the amount of data your device can send to the internet. It's calculated the same way and is therefore denoted in the same units.
The ping or latency describes the delay of a signal due to the time it takes that signal to travel to its destination. In this context, it represents the time it takes a data package to complete its roundtrip over the network and the acknowledgment from the server that it was received. As a value of time, it is denoted as such, most often in Milliseconds (ms)
. It's a value for the responsiveness of your connection.