Frequency Converter
Convert frequency between hertz, kilohertz, megahertz, gigahertz, terahertz, and RPM. Used in electronics, radio, audio engineering, and mechanical rotation.
Common Frequency Conversions
| From | To |
|---|---|
| 1 kHz | 1,000 Hz |
| 1 MHz | 1,000 kHz = 1,000,000 Hz |
| 1 GHz | 1,000 MHz |
| 1 THz | 1,000 GHz |
| 1 RPM | 1/60 Hz ≈ 0.01667 Hz |
| 60 RPM | 1 Hz |
| 3,600 RPM | 60 Hz |
| Radio AM | 535–1,705 kHz |
| Radio FM | 87.5–108 MHz |
Frequency Unit Definitions
- Hertz (Hz)
- The SI unit of frequency = 1 cycle per second. Named after Heinrich Hertz.
- Kilohertz (kHz)
- 1,000 Hz. AM radio range.
- Megahertz (MHz)
- 1,000 kHz. FM radio and CPU speeds (older).
- Gigahertz (GHz)
- 1,000 MHz. Modern CPU and WiFi frequencies.
- RPM
- Revolutions per minute. Used for motors, engines, hard drives.
Frequently Asked Questions
How do I convert RPM to Hz?
Divide RPM by 60. Example: 3,000 RPM ÷ 60 = 50 Hz.
What frequency is human hearing?
Humans can hear approximately 20 Hz to 20,000 Hz (20 kHz).