RMS Voltage from Peak Table: RMS voltage by Peak voltage
Reference table of RMS voltage for RMS Voltage from Peak across a range of peak voltage values — exact, engine-computed figures you can read off at a glance.
RMS Voltage from Peak Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
RMS voltage
229.8097
- Peak-to-peak
- 650.00
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the RMS Voltage from Peak Calculator
The RMS Voltage from Peak Calculator works out your rms voltage, along with 1 related figure in an instant. Enter peak voltage and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the peak voltage.
- Read off your rms voltage, together with peak-to-peak — the calculator updates automatically, with no button to press.
Formula
The RMS Voltage from Peak Calculator uses the formula:
RMS voltage = Peak voltage ÷ √(2)
Worked example
For example, with peak voltage of 325 V, the rms voltage is 229.8097.
| Peak voltage | 325 V |
|---|
| RMS voltage | 229.8097 |
|---|---|
| Peak-to-peak | 650.00 |
Results are estimates for educational use, not professional advice.
Frequently asked questions
Divide the peak by √2. A 325 V peak is about 230 V RMS, typical of mains supply.
Root-mean-square voltage is the equivalent steady DC voltage that delivers the same power.
It is twice the peak, the full swing from the most negative to the most positive value.
The √2 factor is for sine waves. Other shapes have different peak-to-RMS ratios.
The RMS Voltage from Peak Calculator uses the formula: RMS voltage = Peak voltage ÷ √(2). For example, with peak voltage of 325 V, the rms voltage is 229.8097.
Enter the peak voltage. Read off your rms voltage, together with peak-to-peak — the calculator updates automatically, with no button to press.
Related guides
How to Calculate RMS Voltage from Peak: Formula, Steps & Examples
Learn how to calculate RMS Voltage from Peak — the formula explained step by step, with worked examples and a free calculator to check your answer.