What is the formula for Peak-to-Peak Voltage?

The Peak-to-Peak Voltage formula is Vpp = 2 × Vpeak, where Vpp—Peak-to-peak voltage (V); Vpeak—Peak amplitude from zero (V).

What does Vpp mean in the Peak-to-Peak Voltage formula?

Vpp is Peak-to-peak voltage (V).

Peak-to-Peak Voltage

Q: How do you calculate Peak-to-Peak Voltage?

Use the formula Vpp = 2 × Vpeak. The peak-to-peak voltage of a symmetric waveform is twice its peak amplitude, measuring the full swing from the most negative to the most positive value. Enter the values you know in the calculator above and it solves for the remaining variable.

Vpp = 2 · Vpeak

Calculator

Peak-to-Peak

Peak (Amplitude)

Result

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Formula

Vpp = 2 × Vpeak

Description

The peak-to-peak voltage of a symmetric waveform is twice its peak amplitude, measuring the full swing from the most negative to the most positive value. Oscilloscopes display peak-to-peak directly, so this conversion links scope readings to the amplitude used in equations. For a sine, the RMS value is Vpp/(2√2).

Variables

Vpp — Peak-to-peak voltage (V)
Vpeak — Peak amplitude from zero (V)

Practical Notes

For a sine wave Vrms = Vpp / (2√2) ≈ 0.354·Vpp. Peak-to-peak is the easiest amplitude to read on a scope but must be converted to RMS for power calculations.

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