Keep in mind that when referring to digital information and computer storage specifically:
Kilobyte is often considered as being exactly 1024 bytes.
This means subsequent measurements follow this binary progression:
Megabyte = 1024 kilobytes,
Gigabyte = 1024 megabytes,
and so on for Terabyte and beyond.
However for general purposes like file sizes and data transfer rates both definitions can be used depending on what is being measured and who is doing the measuring