The formula for calculating Amps to Volt-amps for single phase is

I_{(A)} × V_{(V)}

**Example of Calculations for (Phase = Single Phase): **

Current (amps): 23

Voltage (volts): 4

23 × 4

= 92 VA (volt-amps)
The formula for calculating Amps to Volt-amps for Three Phase (voltage type = Line to line voltage) is

√3 × I_{(A)} × V_{L-L(V)}

**Example of Calculations for (Phase = AC - Three Phase): **

Current (amps): 23

Voltage (volts): 4

Voltage Type: Line to line voltage

√3 × 23 × 4

= 159.348 VA
The formula for calculating Amps to Volt-amps Three Phase (voltage type = Line to neutral voltage) is

3 × I_{(A)} × V_{L-L(V)}

**Example of Calculations for current type Three Phase: **

Current (amps): 23

Voltage (volts): 4

Voltage Type: Line to neutral voltage

3 × 23 × 4

= 276 VA