Frequency Converter
Convert between hertz, kilohertz, megahertz, gigahertz, terahertz, RPM, and radians per second. Perfect for radio, audio, electronics, and engineering calculations.
Quick Presets
All Conversions
Common Frequency Conversions
| Description | Value | Equivalent |
|---|---|---|
| 1 kilohertz | 1 kHz | 1,000 Hz |
| 1 megahertz | 1 MHz | 1,000 kHz = 1,000,000 Hz |
| 1 gigahertz | 1 GHz | 1,000 MHz = 1 billion Hz |
| 1 terahertz | 1 THz | 1,000 GHz = 1 trillion Hz |
| 60 RPM | 60 RPM | 1 Hz (1 revolution per second) |
| 1 Hz in angular frequency | 1 Hz | 6.283 rad/s (2 pi rad/s) |
About Frequency Units
Understanding Frequency
Frequency measures how often something repeats per unit of time. The SI unit of frequency is the hertz (Hz), which represents one cycle per second. Frequency is fundamental to electronics, physics, music, and engineering.
Common Frequency Units Explained
- Hertz (Hz): The SI unit of frequency. One hertz equals one cycle per second. Named after physicist Heinrich Hertz.
- Kilohertz (kHz): One thousand hertz. Used for AM radio frequencies and audio sampling rates.
- Megahertz (MHz): One million hertz. Common for FM radio, older computer processors, and some wireless communication.
- Gigahertz (GHz): One billion hertz. Used for WiFi, modern CPUs, and microwave frequencies.
- Terahertz (THz): One trillion hertz. Used in advanced imaging, spectroscopy, and cutting-edge research.
- RPM (Revolutions per Minute): Measures rotational speed. Common for engines, hard drives, and motors.
- Radians per Second (rad/s): Angular frequency used in physics and engineering. Related to Hz by the factor 2 pi.
Practical Applications
- Radio: AM radio operates at 530-1700 kHz, FM radio at 88-108 MHz.
- WiFi: Common bands are 2.4 GHz and 5 GHz.
- Audio: Human hearing ranges from 20 Hz to 20 kHz. Musical note A4 is 440 Hz.
- Computing: Modern CPUs operate at 3-5 GHz. RAM frequencies are measured in MHz.
- Automotive: Engine RPM indicates how fast the engine is spinning.