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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

Formula

ppm = (df/F)*10⁶

where

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

Example

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.