Quick reference table
Common frequency conversions
| From | To |
|---|---|
| 1 MHz | 1,000 kHz |
| 1 GHz | 1,000 MHz |
| 1 Hz | 60.00000000 rpm |
| 1 rpm | 0.01666666667 Hz |
| 1 rad/s | 9.549296586 rpm |
| 1 rpm | 0.1047197551 rad/s |
How to convert frequency
Frequency counts how often something repeats each second. Radio and processors use kilohertz, megahertz and gigahertz, while engines and motors are rated in revolutions per minute (rpm).
Every frequency unit is a fixed multiple of one base unit, the Hz. To convert a value, multiply it by the size of the starting unit and divide by the size of the target unit. For example, to convert MHz to kHz, multiply by 1,000. To go the other way, divide by 1,000.
The converter above does this for you and shows the exact formula under the result.
Worked examples
Megahertz to Kilohertz
| Megahertz (MHz) | Kilohertz (kHz) |
|---|---|
| 1 MHz | 1,000 kHz |
| 2 MHz | 2,000 kHz |
| 5 MHz | 5,000 kHz |
| 10 MHz | 10,000 kHz |
| 25 MHz | 25,000 kHz |
| 50 MHz | 50,000 kHz |
| 100 MHz | 100,000 kHz |
| 1,000 MHz | 1,000,000 kHz |
Gigahertz to Megahertz
| Gigahertz (GHz) | Megahertz (MHz) |
|---|---|
| 1 GHz | 1,000 MHz |
| 2 GHz | 2,000 MHz |
| 5 GHz | 5,000 MHz |
| 10 GHz | 10,000 MHz |
| 25 GHz | 25,000 MHz |
| 50 GHz | 50,000 MHz |
| 100 GHz | 100,000 MHz |
| 1,000 GHz | 1,000,000 MHz |
Frequency units explained
| Unit | Symbol | Equals |
|---|---|---|
| Millihertz | mHz | 1 mHz = 0.001 Hz |
| Hertz | Hz | 1 Hz = 1 Hz |
| Kilohertz | kHz | 1 kHz = 1,000 Hz |
| Megahertz | MHz | 1 MHz = 1,000,000 Hz |
| Gigahertz | GHz | 1 GHz = 1,000,000,000 Hz |
| Terahertz | THz | 1 THz = 1 Hz |
| Revolutions per minute | rpm | 1 rpm = 0.0166666666667 Hz |
| Radians per second | rad/s | 1 rad/s = 0.159154943092 Hz |
| Cycles per minute | cpm | 1 cpm = 0.0166666666667 Hz |
| Beats per minute | bpm | 1 bpm = 0.0166666666667 Hz |
Popular conversions: hz to rpm, mhz to ghz, rad/s to rpm.
Frequently asked questions
How many Hz is 1 rpm?
One revolution per minute is 1/60 hertz, or about 0.01667 Hz.
How many MHz is 1 GHz?
One gigahertz is 1,000 megahertz.
How do I convert MHz to kHz?
Multiply the value in MHz by 1,000 to get kHz. For example, 10 MHz = 10,000 kHz.
How many kHz is 1 MHz?
1 MHz = 1,000 kHz, and 1 kHz = 0.001 MHz.
Does this frequency converter work offline?
Yes. After the page has loaded once, all calculations run in your browser, so it keeps working without an internet connection.