Choose a Measurement
Select a measurement and convert between different units
Single conversion
To convert from megahertz (MHz) to rotation per minute (rpm), use the following formula:
Let's convert 5 megahertz (MHz) to rotation per minute (rpm).
Using the formula:
Therefore, 5 megahertz (MHz) is equal to rotation per minute (rpm).
Here are some quick reference conversions from megahertz (MHz) to rotation per minute (rpm):
| megahertz | rotations per minute |
|---|---|
| 0.000001 MHz | rpm |
| 0.001 MHz | rpm |
| 0.1 MHz | rpm |
| 1 MHz | rpm |
| 2 MHz | rpm |
| 3 MHz | rpm |
| 4 MHz | rpm |
| 5 MHz | rpm |
| 6 MHz | rpm |
| 7 MHz | rpm |
| 8 MHz | rpm |
| 9 MHz | rpm |
| 10 MHz | rpm |
| 20 MHz | rpm |
| 30 MHz | rpm |
| 40 MHz | rpm |
| 50 MHz | rpm |
| 100 MHz | rpm |
| 1000 MHz | rpm |
| 10000 MHz | rpm |
For all Frequency converters, choose units using the From/To dropdowns above.
A megahertz (MHz) is a unit used to measure frequency, and it's equal to one million hertz (Hz).
Think of it as a way of counting how many times something happens per second. You'll encounter this measurement in various parts of modern technology, from your car radio to the computer on your desk.
Megahertz is the standard unit for measuring radio frequency, especially for FM (Frequency Modulation) radio.
When you tune your radio to a station like "98.7 FM," you're actually selecting a specific broadcast frequency of 98.7 megahertz.
Each station in the FM broadcast band (which typically spans 88 to 108 MHz) is assigned its own unique frequency.
This prevents signals from overlapping and interfering with each other, allowing your radio to isolate and play the desired station clearly.
In the world of computer processors (CPUs), it's a common misconception that a higher megahertz (MHz) or gigahertz (GHz) rating automatically means better processor performance.
This concept is often referred to as the "megahertz myth."
While clock speed (the rate at which a processor executes instructions, measured in MHz or GHz) is a part of the puzzle, it isn't everything.
A modern processor's overall speed and efficiency depend more on other key factors, such as:
Because of this, a newer processor with a lower clock speed but a more advanced design can easily outperform an older one with a higher clock speed.
The unit "hertz," and by extension megahertz, is named in honor of the German physicist Heinrich Hertz.
In the late 1880s, Hertz was the first person to definitively prove the existence of electromagnetic waves—something that had only been a theory until then.
His foundational work paved the way for nearly all modern wireless technology, including radio, television, and Wi-Fi. Naming the unit of frequency after him is a tribute to his groundbreaking discoveries.
Simply put, rotations per minute (RPM) measures the speed at which something is spinning.
It counts the number of full turns an object completes in one minute. From car engines to computer hard drives, RPM is a key indicator of performance and speed.
The concept of RPM (rotations per minute) gained popularity during the Industrial Revolution, thanks in large part to Scottish engineer James Watt.
While developing his steam engine, Watt needed a way to compare its power output to that of a horse. To do this, he determined how many times a horse could turn a mill wheel in one minute.
He utilized this rotational measurement to help establish the definition of horsepower. As a result, RPM became a crucial metric for quantifying the performance and work capacity of mechanical engines—a practice that continues to this day.
You encounter RPM every day in common technology.
In your car, the tachometer displays the engine's speed in rotations per minute, indicating how fast the crankshaft is spinning. A higher RPM generally means more power is being produced.
Computer hard disk drives (HDDs) also use RPM to measure their performance; a 7200 RPM drive can read and write data faster than a 5400 RPM drive.
RPM ratings, which denote motor speed and efficiency, are also found on household appliances such as blenders, washing machines, and fans.
Although RPM is a common unit, physics and engineering often use hertz (Hz) for frequency and radians per second (rad/s) for angular velocity.
The conversion is straightforward:
To Hertz (Hz): Because a minute has 60 seconds, you divide the RPM value by 60.
To Radians per Second (rad/s): One complete rotation is equivalent to 2π radians. To convert RPM to radians per second, multiply the RPM value by 2π, then divide by 60.