Decihertz Unit | All you need to know

The decihertz (symbol: dHz) is a metric unit of frequency equal to one-tenth of a hertz. One decihertz corresponds to 0.1 cycles per second and is used to measure slow oscillations, periodic signals, and rotating systems. It is occasionally used in engineering, environmental science, and instrumentation where frequencies below one hertz require convenient representation. The decihertz follows the metric prefix system.

One decihertz is equal to 0.1 hertz, 10 centihertz, 100 millihertz, 6 revolutions per minute, and 0.628319 radians per second. The decihertz provides a practical way to express frequencies below one hertz.