〰️ Frequency Calculator
Calculate the frequency of a repeating wave or oscillation from its period, or from wavelength and wave speed.
s
m
m/s
What frequency measures
Frequency is the number of complete cycles of a repeating event, such as a wave or oscillation, that occur per second, measured in hertz (Hz).
The formulas used
When calculating from period, this calculator uses f = 1/T, where T is the time for one complete cycle. When calculating from a wave’s properties, it uses f = v/λ, where v is wave speed and λ is wavelength.
Both formulas describe steady, periodic motion or waves traveling through a uniform medium. For general physics education purposes.
Last reviewed August 2026