How to use the ac voltage rms and peak calculator
Convert between peak, RMS and peak-to-peak voltage. Enter rms voltage in the field above; the peak voltage, peak-to-peak, average (rectified) are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- Vrms — RMS voltage (V)
Worked example
With rms voltage = 230 V, the calculator gives peak voltage ≈ 325.2691 V; peak-to-peak ≈ 650.5382 V; average (rectified) ≈ 207.0728 V.
Frequently asked questions
What is the formula for the ac voltage rms and peak calculation?
Peak voltage (V) = Vrms × √(2). Peak-to-peak (V) = 2 × [Peak voltage]. Average (rectified) (V) = [Peak voltage] × 2 / π. Here Vrms is rms voltage (V).
What inputs do I need for the ac voltage rms and peak calculator?
You need rms voltage in V. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.