Hertz (Hz)
The hertz (symbol: Hz) is the SI derived unit of frequency, defined as one cycle per second. Established in 1930 by the International Electrotechnical Commission and adopted by the General Conference on Weights and Measures in 1960, the unit honors Heinrich Hertz for his experimental verification of electromagnetic waves. Hertz measures repetitive events across physics and technology, ranging from sound waves to electromagnetic radiation.
Frequency
- Nanohertz (nHz)1×10⁹
- Microhertz (µHz)1,000,000
- Millihertz (mHz)1,000
- Hertz (Hz)1
- Kilohertz (kHz)1×10⁻³
- Megahertz (MHz)1×10⁻⁶
- Gigahertz (GHz)1×10⁻⁹
- Terahertz (THz)1×10⁻¹²
Rotational speed
Angular velocity
- Radian per second (rad/s)6.28
- Radian per minute376.99
- Radian per hour22,619.47
- Radian per day542,867.21
- Degrees per second360
- Degrees per minute21,600
- Degrees per hour1,296,000
- Degrees per day31,104,000