megahertz [MHz] to millihertz [mHz] Converter

Quick Reference

1 megahertz (MHz) = 1000000000 millihertz (mHz)

1 millihertz (mHz) = 1.0000e-9 megahertz (MHz)

How to Convert megahertz to millihertz

1 MHz = 1000000000 mHz
1 mHz = 1e-9 MHz

To convert megahertz to millihertz, multiply the value by 1000000000. To convert millihertz back to megahertz, divide by 1000000000.

Example: convert 10 MHz to mHz:
10 MHz = 10 x 1000000000 = 10000000000 mHz

↔ Convert millihertz to megahertz

megahertz

Definition: A megahertz (symbol: MHz) is a unit of frequency equal to one million (1,000,000) hertz (Hz). The hertz, in turn, is the SI unit of frequency, defined as one cycle per second.

History/origin: The megahertz is derived from the hertz, named after the German physicist Heinrich Hertz, who made significant contributions to the understanding of electromagnetic waves. The prefix 'mega-' denotes a factor of 10<sup>6</sup>, adhering to the SI system of units.

Current use: Megahertz is commonly used to measure frequencies in radio broadcasting (e.g., FM radio), television signals, wireless communication (e.g., Wi-Fi), and the clock speeds of computer processors. It is a standard unit in telecommunications, computing, and electronics.

millihertz

Definition: A millihertz (mHz) is a unit of frequency equal to one thousandth (1/1000) of a hertz (Hz). The hertz, in turn, is the SI unit of frequency, defined as one cycle per second.

History/origin: The millihertz is derived from the hertz, named after the German physicist Heinrich Hertz, who made significant contributions to the understanding of electromagnetic waves. The prefix 'milli-' denotes a factor of 10<sup>-3</sup>, adhering to the SI system of units.

Current use: Millihertz is used to measure very low frequencies, often encountered in fields like geophysics (e.g., measuring seismic waves), biology (e.g., measuring slow biological rhythms), and some areas of electronics and signal processing where extremely slow oscillations or events are analyzed.

megahertz to millihertz Conversion Table

megahertz [MHz]	millihertz [mHz]
1 MHz	1000000000 mHz
2 MHz	2000000000 mHz
5 MHz	5000000000 mHz
10 MHz	10000000000 mHz
20 MHz	20000000000 mHz
50 MHz	50000000000 mHz
100 MHz	100000000000 mHz
200 MHz	200000000000 mHz
500 MHz	500000000000 mHz
1000 MHz	1000000000000 mHz

Common pairs of Frequency

millihertz

millihertz to hertz millihertz to kilohertz millihertz to megahertz millihertz to gigahertz millihertz to terahertz

hertz

hertz to millihertz hertz to kilohertz hertz to megahertz hertz to gigahertz hertz to terahertz

kilohertz

kilohertz to millihertz kilohertz to hertz kilohertz to megahertz kilohertz to gigahertz kilohertz to terahertz

megahertz

megahertz to millihertz megahertz to hertz megahertz to kilohertz megahertz to gigahertz megahertz to terahertz

gigahertz

gigahertz to millihertz gigahertz to hertz gigahertz to kilohertz gigahertz to megahertz gigahertz to terahertz

terahertz

terahertz to millihertz terahertz to hertz terahertz to kilohertz terahertz to megahertz terahertz to gigahertz

rotation per minute

rotation per minute to millihertz rotation per minute to hertz rotation per minute to kilohertz rotation per minute to megahertz rotation per minute to gigahertz

degree per second

degree per second to millihertz degree per second to hertz degree per second to kilohertz degree per second to megahertz degree per second to gigahertz

radian per second

radian per second to millihertz radian per second to hertz radian per second to kilohertz radian per second to megahertz radian per second to gigahertz

megahertz [MHz] to millihertz [mHz] Converter

To convert megahertz to millihertz, enter your value in the MHz field above and the result in mHz will appear instantly. You can also use the conversion factor shown in the table on this page to calculate manually. The formula is always the same: multiply your MHz value by the fixed conversion ratio to get the equivalent in mHz.

Our megahertz to millihertz converter uses standardized conversion factors defined by international scientific and metrological organizations. All calculations are performed with full floating-point precision. You can also choose how many decimal places to display in the result, so you get exactly the level of detail you need.

Yes, absolutely. Simply swap the source and destination units in the converter — select mHz as your input unit and MHz as your output unit. The same precision and standardized conversion factor applies in both directions.

Converting between megahertz and millihertz comes up regularly in engineering, scientific research, construction, and everyday tasks that involve measurements from different unit systems. Our converter eliminates the risk of manual calculation errors and saves time whenever you need to switch between these two units.

Yes, the megahertz to millihertz converter is completely free. No account or registration is required, and there are no usage limits. It works on any device — smartphones, tablets, and desktop computers — directly in your browser.

megahertz and millihertz are both units used to measure the same physical quantity, but they belong to different measurement systems or represent different scales. The mathematical relationship between them is fixed and constant, which is what makes accurate conversion possible. Scroll up to see the exact conversion factor, formula, and a reference table for common values.

megahertz [MHz] to millihertz [mHz] Converter

Quick Reference

1 megahertz (MHz) = 1000000000 millihertz (mHz)

1 millihertz (mHz) = 1.0000e-9 megahertz (MHz)

How to Convert megahertz to millihertz

1 MHz = 1000000000 mHz
1 mHz = 1e-9 MHz

To convert megahertz to millihertz, multiply the value by 1000000000. To convert millihertz back to megahertz, divide by 1000000000.

Example: convert 10 MHz to mHz:
10 MHz = 10 x 1000000000 = 10000000000 mHz

↔ Convert millihertz to megahertz

megahertz

Definition: A megahertz (symbol: MHz) is a unit of frequency equal to one million (1,000,000) hertz (Hz). The hertz, in turn, is the SI unit of frequency, defined as one cycle per second.

millihertz

Definition: A millihertz (mHz) is a unit of frequency equal to one thousandth (1/1000) of a hertz (Hz). The hertz, in turn, is the SI unit of frequency, defined as one cycle per second.

megahertz to millihertz Conversion Table

megahertz [MHz]	millihertz [mHz]
1 MHz	1000000000 mHz
2 MHz	2000000000 mHz
5 MHz	5000000000 mHz
10 MHz	10000000000 mHz
20 MHz	20000000000 mHz
50 MHz	50000000000 mHz
100 MHz	100000000000 mHz
200 MHz	200000000000 mHz
500 MHz	500000000000 mHz
1000 MHz	1000000000000 mHz