Some Basics on Data Access Speed

Internet Access Speed is measured in Bits per second.
128Kbps means 128 Kilobits per second.
File sizes are in Bytes - tens/hundreds of bytes, thousands of bytes (Kilobytes), millions of bytes (Megabytes).
A word document of 500b means 500 bytes A pdf document of 50KB means 50 Kilobytes A mp3 song of 5MB means 5 Megabytes.

4 Bits = 1 Nibble
8 Bits = 1 Byte
1000 Bytes = 1 Kilo Bits ............KB/Sec ( in data communication )
1024 Bytes = 1 KB ( Kilo Bytes) ......... ( while in data storage )
1024 KB = 1 MB ( Mega Bytes)
1024 MB = 1 GB ( Giga Bytes)
1024 GB = 1 TB ( Terra Bytes)
1024 TB = 1 PB ( Petabyte)
1024 PB = 1 EB ( Exabyte )
1024 EB = 1 ZB ( zettabyte)
1024 ZB = 1 YB ( yottabyte)

While downloading a file from a website, the speed shown in the dialogue box is in KB/sec, which is Kilobytes per second.
To decipher the internet access speed (at that instance), the speed shown in the box needs to be multiplied by 8.
If the box is displaying speed of 4.2 KB/ sec, the access speed is 4.2 x 8 = 33.6 Kbps i.e., approx. 33 Kilobits per second or 33 Kbps.