# Frequency PPM Calculator

The frequency of crystals/oscillators, frequency generator or frequency control devices are generally specify in Hertz (Hz, kHz or MHz) with a frequency tolerance specify in units of parts per million (ppm). This frequency tolerance can be express in Hertz (Hz) using the equation below or you can use our online calculator :

$Frequency\ variation\ (Hz)\ =\ \pm\ \cfrac{f \cdot ppm}{10^6}$

Enter frequency (Hz):

Enter tolerance +/- (ppm):

Frequency Variation (+/- Hz):

Minimum Frequency (Hz):

Maximum Frequency (Hz):