Frequency Calculator
This turns a period into a frequency and back. Enter the time one full cycle takes, or a number of cycles and how long they took, and it returns the frequency in hertz at a readable scale, the angular frequency in radians per second, and the same figure as revolutions or beats per minute. A third action converts a frequency you already have between hertz, kilohertz, megahertz, gigahertz, radians per second, rpm and bpm. The wave relation, frequency from a wavelength, needs a wave speed and lives on the wavelength calculator instead.