“Mbps” is “megabits per second” while “MBps” is “megabytes per second” where 1 “megabyte” is equal to 1,024 kilobytes. Summary: MHz is a unit of frequency while Mbps is a unit for the data transfer across a digital communication line. 1 MHz is equivalent to 10^6 Hz while 1 Mbps is equal to 10^6 bits per second .