Mhz to Hz
Convert any value from megahertz to hertz with full precision. Use the converter above for instant results, or read on for the exact formula, worked examples, common uses, and answers to frequently asked questions.
About the Megahertz to Hertz conversion
Frequency measures the number of times a repeating event occurs per unit of time, most commonly per second. The hertz (Hz), equal to one cycle per second, is the SI unit. Frequencies in audio, radio, computing, and physics span an enormous range, from fractions of a hertz to many gigahertz.
This page focuses specifically on converting megahertz to hertz. Use the converter above for instant results, or read on for what each unit is, the exact formula, a worked example, and answers to common questions.
Understanding megahertz and hertz
What is a megahertz?
The megahertz equals one million hertz. It describes FM radio and television broadcast bands and was the standard way to rate processor clock speeds before gigahertz took over.
What is a hertz?
The hertz is the SI unit of frequency, equal to one cycle or event per second, named after Heinrich Hertz. It measures everything from sound and radio waves to the clock speed of processors.
How a megahertz compares to a hertz
The megahertz is the larger of the two units: one megahertz is about 1.000000e+6 hertz. Because the hertz is smaller, the same length or quantity works out to a larger number when you measure it with that unit. Knowing which unit is larger is a quick way to sanity-check a conversion: if the numbers move in the wrong direction, the two units have probably been swapped.
Conversion formula
The exact mathematical relationship between megahertz and hertz is:
1 megahertz = 1.000000e+6 hertz
So to convert a value V from megahertz to hertz, use:
Vhertz = Vmegahertz × 1.000000e+6
To go in the opposite direction:
Vmegahertz = Vhertz × 1.000000e-6
These factors come from the international definitions published by NIST, BIPM, and ISO 80000 and are exact within their respective standard systems. The converter applies them with full floating-point precision.
Worked example
Using the formula above, here are some common values converted from Megahertz to Hertz:
| Megahertz | Hertz |
|---|---|
| 1 | 1.000000e+6 |
| 5 | 5.000000e+6 |
| 10 | 1.000000e+7 |
| 25 | 2.500000e+7 |
| 50 | 5.000000e+7 |
| 100 | 1.000000e+8 |
Sources and accuracy
The hertz is defined as one cycle per second, with the second defined by the caesium-133 transition (BIPM, NIST). All other frequency units are decimal multiples or submultiples of the hertz.
Conversion factors are cross-checked against the NIST SP 811 guide, the BIPM SI brochure, and ISO 80000, plus published historical references for older unit systems. For mission-critical work such as medical dosing, legal-for-trade measurement, aerospace, or large-scale engineering, always verify independently with the original source.
Practical tips
Make sure you are converting frequency (Hz) rather than angular frequency (rad/s). To convert between them, multiply or divide by 2π. This converter uses ordinary frequency.
Frequently asked questions
How many hertz are in one megahertz?
One megahertz equals 1.000000e+6 hertz. To convert, multiply your megahertz value by 1.000000e+6.
Which is bigger, a megahertz or a hertz?
The megahertz is bigger. One megahertz equals about 1.000000e+6 hertz.
How accurate is this megahertz to hertz converter?
It uses the official international conversion factors from NIST and BIPM with full double-precision floating-point accuracy. For everyday use the result is precise to many more decimal places than any practical measurement requires.
Can I convert hertz back to megahertz as well?
Yes. Use the swap button above to reverse the From and To fields, or change either dropdown to any unit in the frequency category. The calculation runs entirely in your browser, so it also works offline once the page has loaded.