RMS / Peak Voltage Calculator
Convert between peak and RMS (effective) voltage.
V
Result
219,9102 V (RMS)
RMS voltage: 219,9102 V
Result in all units
Step-by-step solution
What Is RMS Voltage?
RMS (effective) voltage is the value of an alternating voltage that delivers the equivalent direct-current power. Mains voltage is usually expressed as RMS.
How is it calculated?
How Is It Calculated?
For a sine wave V_rms = V_peak ÷ √2
- Enter the peak voltage.
- Divide by √2 (≈1,414).
For example, 311 V peak ≈ 220 V RMS.
Frequently Asked Questions
What is the peak value of 220 V mains?
220 V RMS corresponds to approximately 311 V peak voltage.