I hope this explains abit, and if not, im just gonna try to give a few examples. on some known connection types, that ppl usually have with fiber or adsl.
256kilobit/s(256kbs) = 32kilobyte/s or 32kB/s or
512kilobit/s(512kbs) = 64kilobyte or 64kB/s or
768kilobit/s(768kbs) = 96kilobyte or 96kB/s or
1mbit/s(1mbs/1mbits) = 125kilobyte or 125kB/s or
10mbit/s(10mbs/10mbits) = 1250kilobyte or 1250kB/s or