Cycles, events and angular frequency per second.
All factors come from the central conversion registry.
| Unit | Symbol | System | Definition |
|---|---|---|---|
| Hertz | Hz | SI | 1 Hz = 1 s⁻¹ |
| Kilohertz | kHz | SI | 1 kHz = 1000 Hz |
| Megahertz | MHz | SI | 1 MHz = 10⁶ Hz |
| Gigahertz | GHz | SI | 1 GHz = 10⁹ Hz |
| Terahertz | THz | SI | 1 THz = 10¹² Hz |
| Revolutions per Minute | rpm | Mechanical | 60 rpm = 1 Hz |
| Beats per Minute | BPM | Conventional | 60 BPM = 1 Hz |
| Radians per Second | rad/s | SI angular frequency | 2π rad/s = 1 Hz |
Frequency measures repeated events per second. One hertz is one cycle per second; larger SI frequency units scale by powers of ten.
The interactive calculator, reference table and indexed pair pages all read from the same conversion registry, so unit definitions and formulas stay synchronized.