Convert Hertz to Megahertz
Hertz to megahertz is the conversion you need once a frequency reaches into the millions — radio bands, older CPU clocks, network signals — where counting in plain hertz stops making sense. Hertz just means cycles per second, and one hertz is exactly 0.000001 megahertz, so the number shrinks by a factor of a million when you move to megahertz.
Hertz to Megahertz conversion table
| Hertz (Hz) | Megahertz (MHz) |
|---|---|
| 1 | 0.000001 |
| 2 | 0.000002 |
| 3 | 0.000003 |
| 5 | 0.000005 |
| 10 | 0.00001 |
| 20 | 0.00002 |
| 50 | 0.00005 |
| 100 | 0.0001 |
| 500 | 0.0005 |
| 1,000 | 0.001 |
The formula
To convert hertz to megahertz, multiply the number of hertz by 0.000001 (the same as dividing by 1,000,000):
megahertz = hertz × 0.000001
A worked example
Say you have a 2,500,000 Hz signal and want it in megahertz:
2,500,000 × 0.000001 = 2.5 MHz
So 2,500,000 hertz is exactly 2.5 megahertz.
Why the number is exact
Hertz measures how many cycles happen each second, and the metric prefixes climb in clean powers of ten. "Mega" means exactly a million, so a megahertz is exactly 1,000,000 hertz. That makes one hertz exactly 0.000001 megahertz — a shift of the decimal point six places, with nothing approximated.
When you'll use it
Reading radio frequencies and station bands, working with processor clock speeds, and turning large hertz counts into the megahertz figures used across broadcasting and electronics.
Frequently asked questions
How many hertz are in a megahertz?
Exactly 1,000,000 hertz. The 'mega' prefix always means a million, so a megahertz is a million cycles per second — an exact figure, not a rounded one.
What is 2,500,000 Hz in megahertz?
Exactly 2.5 MHz. You divide by 1,000,000 (the same as multiplying by 0.000001), so 2,500,000 hertz becomes 2.5 megahertz.
Is the hertz to megahertz conversion exact?
Yes. A megahertz is exactly 1,000,000 hertz by definition, so one hertz is exactly 0.000001 megahertz — nothing is rounded.