Rpm to Megahertz
An instant rpm-to-megahertz converter, with the formula and a reference table below.
| Rpm | Megahertz |
|---|---|
| 1 rpm | 1.66667e-08 MHz |
| 2 rpm | 3.33333e-08 MHz |
| 3 rpm | 5e-08 MHz |
| 5 rpm | 8.33333e-08 MHz |
| 10 rpm | 1.66667e-07 MHz |
| 25 rpm | 4.16667e-07 MHz |
| 50 rpm | 8.33333e-07 MHz |
| 100 rpm | 1.66667e-06 MHz |
How to use
- Enter a value in the Rpm field.
- The Megahertz figure appears immediately — no button to press.
- Typing in the Megahertz field converts back to Rpm the same way.
- Use the reference table for the values that come up most often.
Rpm to Megahertz formula
To convert rpm to megahertz, multiply by 1.66666667e-08.
MHz = rpm × 1.66666667e-08
Why this factor: the revolution per minute and the megahertz are both defined against the hertz, so dividing one definition by the other gives 1.66666667e-08 directly. Both definitions are set out in full below.
To go the other way, divide by 1.66666667e-08 — or use the Megahertz to Rpm converter, which is the same calculation reversed.
Worked example
Given 60 rpm, multiplying by 1.66666667e-08 yields 1e-06 MHz.
60 rpm × 1.66666667e-08 = 1e-06 MHz
The converter above does this for any value you type, in either direction.
What is a revolution per minute?
Revolutions per minute measures rotational speed as complete turns each minute.
Definition: One revolution per minute is exactly 1/60 hertz.
Where it is used: Engine and motor speeds, hard drive and fan speeds, and centrifuge settings.
What is a megahertz?
A megahertz is one million cycles per second.
Definition: Exactly 1×10⁶ hertz.
Where it is used: FM radio and broadcast bands, memory clock speeds, and radio communications.
Rpm vs Megahertz
The revolution per minute is a specialized unit while the megahertz is a metric unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many megahertz are in a revolution per minute?
One revolution per minute equals 1.66666667e-08 megahertz.
What is the formula to convert rpm to megahertz?
Multiply the number of rpm by 1.66666667e-08. To reverse it, divide by 1.66666667e-08 instead.
How do I convert megahertz back to rpm?
Divide by 1.66666667e-08, which is the same as multiplying by 60000000.
How many megahertz are in 10 rpm?
10 rpm works out to 1.66667e-07 MHz.
How is the revolution per minute defined?
One revolution per minute is exactly 1/60 hertz.