Throughput is the amount of data that can be transferred over your Internet connection at one point in time.
Megabits per second (Mbps) refers to data transfer speeds as measured in megabits (Mb). This term is commonly used in communications and data technology to demonstrate the speed at which a transfer takes place. A megabit is just over one million bits, so "Mbps" indicates the transfer of one million bits of data each second. Data can be moved even faster than this, measured by terms like gigabits per second (Gbps).
The test shows the current throughput you can get on your Internet connection. Factors such as network congestion and other downloads in progress can affect the available throughput.
The results of the test can be affected by any network congestion between you and our servers. If you have other downloads in progress this can also affect the results.
We calculate the speed of your Internet connection by calculating the time it takes to download a predefined set of data.* Actual speeds may vary based on factors such as line quality, distance from exchange (for ADSL/ADSL2+), technology used, hardware capabilities, server route, and network congestion.