Hz to ppm Calculator

This calculator converts the ratio of Frequency variation to Center frequency (Hz/kHz/MHz/GHz) to parts per million (PPM)

🔁 ppm to Hz


ppm = (df/F)*106


  • F is the center frequency
  • df is the peak frequency variation
  • ppm is the resulting parts per million


At a frequency of 1 GHz if the system is specified for a peak frequency shift of 100 Hz, then the reference oscillator has to be better than +/- 0.1 ppm.