Hertz to Megahertz
Type a value in either box to convert between hertz and megahertz. The factor is 1e-06.
| Hertz | Megahertz |
|---|---|
| 1 Hz | 1e-06 MHz |
| 2 Hz | 2e-06 MHz |
| 3 Hz | 3e-06 MHz |
| 5 Hz | 5e-06 MHz |
| 10 Hz | 1e-05 MHz |
| 25 Hz | 2.5e-05 MHz |
| 50 Hz | 5e-05 MHz |
| 100 Hz | 0.0001 MHz |
How to use
- Enter a value in the Hertz field.
- The Megahertz figure appears immediately — no button to press.
- Typing in the Megahertz field converts back to Hertz the same way.
- Use the reference table for the values that come up most often.
Hertz to Megahertz formula
The factor from hertz to megahertz is 1e-06.
MHz = Hz × 1e-06
Why this factor: the hertz and the megahertz are both defined against the hertz, so dividing one definition by the other gives 1e-06 directly. Both definitions are set out in full below.
To go the other way, divide by 1e-06 — or use the Megahertz to Hertz converter, which is the same calculation reversed.
Worked example
Take 50 Hz and multiply by the factor 1e-06: the result is 5e-05 MHz.
50 Hz × 1e-06 = 5e-05 MHz
The converter above does this for any value you type, in either direction.
What is a hertz?
The hertz is the SI unit of frequency — one cycle per second.
Definition: Defined as one reciprocal second (s⁻¹). Named after Heinrich Hertz.
Where it is used: Mains electricity (50 or 60 Hz), audio frequencies, and display refresh rates.
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.
Hertz vs Megahertz
The hertz is an SI 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 hertz?
One hertz equals 1e-06 megahertz.
What is the formula to convert hertz to megahertz?
Multiply the number of hertz by 1e-06. To reverse it, divide by 1e-06 instead.
How do I convert megahertz back to hertz?
Divide by 1e-06, which is the same as multiplying by 1000000.
How many megahertz are in 10 hertz?
10 Hz works out to 1e-05 MHz.
How is the hertz defined?
Defined as one reciprocal second (s⁻¹). Named after Heinrich Hertz.