Convert Kilohertz to Megahertz
Kilohertz to megahertz is the conversion you need when a frequency climbs out of the audio and AM-radio range into the megahertz band, where megahertz is the friendlier label. One kilohertz is exactly 0.001 megahertz, so the number always gets smaller when you switch from kilohertz to megahertz.
Kilohertz to Megahertz conversion table
| Kilohertz (kHz) | Megahertz (MHz) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1,000 | 1 |
The formula
To convert kilohertz to megahertz, multiply the number of kilohertz by 0.001 (which is exactly 1/1000):
megahertz = kilohertz × 0.001
A worked example
Say you have 2500 kHz and want it in megahertz:
2500 × 0.001 = 2.5 MHz
So 2500 kilohertz is exactly 2.5 megahertz.
Why the number is exact
The "kilo" prefix means exactly one thousand and the "mega" prefix means exactly one million, so a megahertz is exactly 1000 kilohertz. That makes one kilohertz exactly 0.001 megahertz — a decade step by an exact power of 1000, not a rounded factor. Every kilohertz-to-megahertz conversion is exact.
When you'll use it
Stepping a frequency up from the kilohertz range into megahertz for radio and signal work, and reading specs that mix the two prefixes so you can line them up on the same scale.
Frequently asked questions
How many megahertz are in a kilohertz?
Exactly 0.001 megahertz, which is one thousandth. Since a megahertz is one thousand kilohertz, one kilohertz is 1/1000 of a megahertz — a fixed, exact number.
How many kilohertz make one megahertz?
Exactly 1000 kilohertz. The 'mega' prefix is one thousand times the 'kilo' prefix, so a megahertz is exactly 1000 kilohertz.
Is the kilohertz to megahertz conversion exact?
Yes. One kilohertz is exactly 0.001 megahertz by the definitions of the 'kilo' and 'mega' prefixes, so nothing is rounded away.