A megabyte is larger than a kilobyte. All digital measurements are based on bytes, and it takes more bytes to make a megabyte than a kilobyte.
In order to make 1 kilobyte, it takes 1,024 bytes. This measurement is normally rounded off to even numbers, so it will often be listed as 1,000 bytes. The same number of kilobytes, 1,024 is needed to make 1 megabyte. Both of these measurements, along with gigabytes, are used in a majority of everyday settings. When saving a document on a computer, the file is usually a few kilobytes in file size, while a song that is being saved may be a few megabytes in size.