Amps to Volt-Amps (VA) Calculator
Amps to VA Formulas
Single phase amps to VA:
S(VA) = I(A) × V(V)
Three phase amps to VA:
S(VA) = √3 × I(A) × V(V)
Where:
- S(VA) = Apparent power in volt-amps
- I(A) = Current in amps
- V(V) = Voltage in volts
- √3 = 1.732 (square root of 3)
How to Convert Amps to VA
To convert amps to volt-amps (VA), follow these steps:
- Select the phase type (Single Phase or Three Phase)
- Enter the current in amps
- Enter the voltage in volts
- Click "Calculate" to get the apparent power in VA
- Use "Reset" to clear all inputs and results
Understanding Volt-Amps (VA)
VA (volt-amps) is a unit of apparent power in an electrical circuit. It represents the product of the RMS voltage and RMS current in a circuit without considering the phase angle between them.
Single Phase vs Three Phase
| System Type | Description | Common Applications |
|---|---|---|
| Single Phase | One alternating voltage | Residential homes, small appliances |
| Three Phase | Three alternating voltages 120° apart | Industrial equipment, large motors |
VA vs Watts
VA measures apparent power, while watts measure real power. The ratio between them is the power factor (PF = Watts/VA). For purely resistive loads, VA equals watts.