A FREE Peak Voltage Calculator is an online electrical and electronics tool used to calculate the maximum voltage level, or peak voltage (Vₚ), of an AC waveform.
It is especially useful when you know the RMS voltage or peak-to-peak voltage and need to determine the corresponding peak voltage.
What Is Peak Voltage?
Peak voltage is the highest instantaneous voltage reached by an alternating-current waveform relative to its zero-voltage reference.
For a sinusoidal AC waveform:
Vₚ = Vᵣₘₛ × √2
Where:
- Vₚ = peak voltage
- Vᵣₘₛ = RMS voltage
- √2 ≈ 1.414
If you know peak-to-peak voltage:
Vₚ = Vₚₚ / 2
Example
Suppose an AC circuit has an RMS voltage of 120 V.
The peak voltage is:
Vₚ = 120 × 1.414
Vₚ ≈ 169.7 V
Therefore, a 120 V RMS sinusoidal waveform has a peak voltage of approximately 169.7 V.
What Can a FREE Peak Voltage Calculator Calculate?
A useful calculator can convert between:
- RMS voltage
- Peak voltage
- Peak-to-peak voltage
- Voltage amplitude
- Different voltage units such as V, mV, and kV
Why Is It Useful?
The calculator can help with:
- AC circuit analysis
- Electronics projects
- Electrical engineering
- Power supply design
- Audio electronics
- Oscilloscope measurements
- Signal analysis
- Physics calculations
- Electrical engineering homework
Peak vs RMS vs Peak-to-Peak
| Voltage Type | Meaning |
|---|---|
| Peak Voltage (Vₚ) | Maximum voltage from zero |
| RMS Voltage (Vᵣₘₛ) | Effective heating-equivalent voltage |
| Peak-to-Peak (Vₚₚ) | Total voltage from positive peak to negative peak |
For a symmetrical sine wave:
Vₚₚ = 2 × Vₚ
In simple terms: a FREE Peak Voltage Calculator helps you quickly determine the maximum voltage of an AC or sinusoidal signal from values such as RMS or peak-to-peak voltage.
