A kilobit is 10 ^ 3 or 1,000 bits.
A kilobit (which can be abbreviated to ” Kb “) contains one thousand bits and as such there are about 1,000 kilobits in a megabit.
Kilobits (Kb) are much smaller than kilobytes (KB), because a single kilobyte is formed by mixing 8 kilobits. Therefore, a kilobit is one-eighth size of a kilobyte.
Before broadband Internet Connection, the speed of Internet connection was often measured in kilobits. For example, a 28.8K modem can receive data up to 28.8 kilobits per second (Kbps). A 56K modem can receive data up to 56 Kbps.
Most ISPs now offer connection speeds of around 10 Mbps or more, so the use of kilobits is not the same nowadays.
But if you download a file from a server that does not have much bandwidth , then your system may receive data in speeds of less than 1 Mbps. In such case, download speed is displayed in kilobits per second.
So if you download an 800 KB file at a speed of 400 Kbps, then it will take about 16 seconds (not 2). This is because 400 kilobits per second is the same as 50 kilobytes per second.