Vpp to Vp Calculator

This tool converts a peak-to-peak voltage to peak voltage for an AC waveform.



Sine voltage

Referring to the picture of a sine wave above, there are three different voltage levels:

  1. Peak Voltage (Vp)
  2. Peak-to-peak Voltage (Vpp)
  3. RMS Voltage (VRMS)


Vp = Vpp/2

Vp = √2 * VRMS


Peak voltage Vp is always half the value of the peak-to-peak voltage Vpp. It doesn’t matter if it’s a sine, triangle or square wave.

For an AC waveform the peak voltage represents the maximum and minimum excursions of the waveform. If it’s symmetric about zero or DC, then Vp = -Vp. However if there’s a DC component to the signal, then this equation does not apply.

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