Bandwidth (rate of transmission)

Bandwidth (rate of transmission)
A range within a band of frequencies or wavelengths.
The amount of data that can be transmitted in a fixed amount of time

• Network Bandwidth (Digital Bandwidth)


• Measure of available or consumed data communication resources


• Expressed in bit/s or multiples of it (kbit/s, Mbit/s, etc)


Bandwidth in web hosting

In website hosting, the term "bandwidth" is often incorrectly used to describe the amount of data transferred to or from the website or server within a prescribed period of time, for example bandwidth consumption accumulated over a month measured in Gigabyte per month.

56 kbit/s Modem / Dialup
1.5 Mbit/s ADSL Lite
10 Mbit/s Ethernet
100 Mbit/s Fast Ethernet
1000 Mbit/s Gigabit Ethernet
11 Mbit/s Wireless 802.11b
54 Mbit/s Wireless-G 802.11g
300 Mbit/s Wireless-N 802.11n

KBps VS kbps

• Measure of file size: KBpsKiloBytes (KB upper case “K” and upper case “B”). Upper case “K” stands for 1024. 1024 is computed from 210. (2 power 10).


• 1KB (KiloByte) = 1024 Bytes (approximately 1000 Bytes)


• Measure of data transfer speeds: kbpskilobits (kb small case “k” and small case “b”). The higher the kbps i.e. more the bits transferred per second, more the speed, faster the network/connection. Here k stands for 1000 (103 )


• 1 kbps (kilo bits per second) = 1000 bits per second

Calculate 512kbps to KBps
512 kbps
= 512 x 1000 bps (∵1 kbps = 1000 bps)
= 512000 bps
= 512000/8 Bps (∵1 byte = 8 bits)
= 512000/(8x1024) KBps (∵1 KB = 1024 byte)
= 62.5 KBps