RMS Voltage Calculator
Free calculate root mean square voltage from peak voltage. determine v_rms = v_peak/√2 for sinusoidal ac voltage.
Input Parameters
V
V
Results
Enter voltage to calculate RMS or peak
RMS Voltage Formula
For Sinusoidal Wave
V_rms = V_peak / √2
V_peak = V_rms × √2
Where:
- • V_rms = RMS voltage (V)
- • V_peak = peak voltage (V)
- • √2 ≈ 1.414
Common Values
- • US Mains: 120 V_rms (170 V_peak)
- • EU Mains: 230 V_rms (325 V_peak)
- • Peak-to-Peak: V_pp = 2 × V_peak