The megahertz (MHz) is a unit of measurement representing one million cycles per second or one million hertz. It measures frequency, specifically the number of times an event, typically a wave cycle, occurs within one second. The symbol for megahertz is MHz. Widely used across various fields, including electronics, telecommunications, and computing, the megahertz serves as a standard unit to express the operational frequency of devices such as computers, radio transmitters, and processors. In practical and scientific contexts, understanding and accurately specifying frequencies in megahertz are crucial for ensuring compatibility, performance, and safety of electronic systems and communications networks.