By default, doing an ls command or ls -la lists files and their sizes in byte format. Now, that isn't so helpful is it? What you need to do is add "h" or the human readable format option. Let's take a look at the description straight from the man page.
So using this for example, issuing a command ls -lah would give you the following output:
Now that makes you forget that 1024 bytes = 1kb. Did this help you? Please leave a comment!