MHz to Hz Converter

How to convert megahertz to hertz?

To convert megahertz to hertz, multiply by 1,000,000. The mega- SI prefix is fixed at exactly 10^6 by the BIPM, and the hertz itself is defined via the caesium-133 atomic-clock standard. BigNumber arithmetic preserves precision for very small or very large frequency values.

f_(Hz) = f_(MHz) × 1,000,000

Example

Convert 1 megahertz to hertz:

How many hertz in a megahertz?

Exactly 1,000,000 Hz, by SI definition of the mega- prefix as 10^6.

1 MHz = 1,000,000 Hz

How many megahertz in a hertz?

Exactly 10^−6 MHz, or 0.000001 MHz.

1 Hz = 0.000001 MHz

What is the SI definition of hertz?

The hertz, named after physicist Heinrich Rudolf Hertz, is the SI unit of frequency, defined as one cycle (or one event) per second. Since the 2019 SI redefinition, it inherits its precision from the caesium-133 hyperfine transition fixed at exactly 9,192,631,770 Hz.

What uses MHz frequencies?

MHz is the dominant unit for consumer wireless: FM radio (88-108 MHz), VHF TV (174-216 MHz), 433/868/915 MHz ISM bands, 900 MHz GSM, 1800 MHz DCS, 2400 MHz Wi-Fi/Bluetooth, and 5800 MHz Wi-Fi. It is also used for CPU clocks, crystal oscillators, and oscilloscope timebases.

Why convert MHz to Hz?

Because low-level RF programming interfaces, DSP libraries, SPICE simulators, and EMC test receivers use Hz at the register or scripting layer, even when the human-facing specification is in MHz. Converting once and storing the Hz value avoids drift in later calculations.

Popular megahertz to hertz conversion table