Megahertz to Millihertz Converter

Frequency Converter

13 units available

Decimals:

From

To

1,000,000,000

1 MHz = 1,000,000,000 mHz

Formula:

mHz = MHz × 1.000000e+9

With your value: 1 MHz = 1,000,000,000 mHz

Other Megahertz to Millihertz conversions

2 MHz to mHz 3 MHz to mHz 4 MHz to mHz 5 MHz to mHz 6 MHz to mHz 7 MHz to mHz 8 MHz to mHz

Megahertz to Millihertz Conversion Table

Megahertz (MHz)	Millihertz (mHz)
0.5	500,000,000
1	1,000,000,000
2	2,000,000,000
5	5,000,000,000
10	10,000,000,000
15	15,000,000,000
20	20,000,000,000
25	25,000,000,000
50	50,000,000,000
100	100,000,000,000
250	250,000,000,000
500	500,000,000,000
1000	1.000000e+12

Millihertz to Megahertz Conversion Table

Millihertz (mHz)	Megahertz (MHz)
0.5	5.000000e-10
1	1.000000e-9
2	2.000000e-9
5	5.000000e-9
10	1.000000e-8
15	1.500000e-8
20	2.000000e-8
25	2.500000e-8
50	5.000000e-8
100	1.000000e-7
250	2.500000e-7
500	5.000000e-7
1000	1.000000e-6

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Megahertz (MHz)

Frequency

SI definition

Derived from the hertz (1 Hz = 1 s⁻¹), traceable to the SI second.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Millihertz (mHz)

Frequency

SI definition

Derived from the hertz (1 Hz = 1 s⁻¹), traceable to the SI second.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Megahertz to Millihertz

To convert from Megahertz (MHz) to Millihertz (mHz), multiply the value by 1,000,000,000.

Formula: mHz = MHz × 1.000000e+9

Reverse: MHz = mHz × 1.000000e-9

Step-by-Step Example

Start with your value in Megahertz. For example: 5 MHz
Multiply by the conversion factor: 5 x 1,000,000,000
The result is: 5,000,000,000 mHz

About Megahertz

The megahertz (MHz) is a unit of frequency. One megahertz equals 1.000000 × 10^+6 hertzs. UnitConvertLab converts it against every other frequency unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: frequency calculations, engineering and science, education.

About Millihertz

The millihertz (mHz) is a unit of frequency. One millihertz equals 0.001 hertzs. UnitConvertLab converts it against every other frequency unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: frequency calculations, engineering and science, education.

Frequently Asked Questions

How many Millihertz are in 1 Megahertz?

There are exactly 1,000,000,000 Millihertz in 1 Megahertz. This means the conversion factor from Megahertz to Millihertz is 1,000,000,000.

What is the formula to convert Megahertz to Millihertz?

The formula to convert Megahertz to Millihertz is: mHz = MHz × 1.000000e+9. For example, to convert 10 Megahertz to Millihertz, you would multiply 10 by 1,000,000,000.

What is a Megahertz?