Internet bandwidth refers to the capacity of a network communication link to transmit data from one computer to another in a specified time – usually one second. Contrary to popular conception, bandwidth does not refer to a measure of network speed and is more to do with the capacity for data transfer rates.

Bandwidths are traditionally expressed in bits per second (bps); network links that have a greater capacity that can be measured in millions of bits per second is referred to as Mbps or megabits per second. And when the internet bandwidth capacity is even bigger and can be measured in billions of bits per second, or gigabits per second, it’s referred to as Gbps.