Popular frequency conversions
- Hertz to kilohertz1 Hz = 0.001 kHz
- Hertz to megahertz1 Hz = 0.000001 MHz
- Hertz to gigahertz1 Hz = 1×10⁻⁹ GHz
- Kilohertz to hertz1 kHz = 1,000 Hz
- Kilohertz to megahertz1 kHz = 0.001 MHz
- Kilohertz to gigahertz1 kHz = 0.000001 GHz
- Megahertz to hertz1 MHz = 1,000,000 Hz
- Megahertz to kilohertz1 MHz = 1,000 kHz
- Megahertz to gigahertz1 MHz = 0.001 GHz
- Gigahertz to hertz1 GHz = 1,000,000,000 Hz
- Gigahertz to kilohertz1 GHz = 1,000,000 kHz
- Gigahertz to megahertz1 GHz = 1,000 MHz
- Cycles per minute to hertz1 rpm = 0.0166667 Hz
- Hertz to cycles per minute1 Hz = 60 rpm
- Radians per second to hertz1 rad/s = 0.159155 Hz
- Hertz to radians per second1 Hz = 6.28319 rad/s
About frequency units
Frequency counts cycles per second. The hertz is one cycle per second. Angular frequency ω (rad/s) is 2π times the frequency in hertz — a common source of factor-of-2π errors.
Frequency unit reference
| Unit | Symbol | Value in Hz | System |
|---|---|---|---|
| Hertz | Hz | 1 Hz | SI |
| Kilohertz | kHz | 1,000 Hz | SI |
| Megahertz | MHz | 1,000,000 Hz | SI |
| Gigahertz | GHz | 1,000,000,000 Hz | SI |
| Terahertz | THz | 1,000,000,000,000 Hz | SI |
| Millihertz | mHz | 0.001 Hz | SI |
| Cycle per minute (rpm) | rpm | 0.016666667 Hz | Other |
| Cycle per hour | cph | 0.00027777778 Hz | Other |
| Radian per second (angular frequency) | rad/s | 0.15915494 Hz | SI |
Frequently asked questions
What is the SI unit of frequency?
This converter uses the hertz (Hz) as its reference unit; every other unit is defined relative to it.
How many frequency units can I convert?
9 units are supported here, across SI, Other systems. Every pair can be converted in both directions.
Does this frequency converter work offline?
Yes. Once the page has loaded, every calculation runs locally in your browser — nothing is sent to a server.