kVA to Amps Calculator
Enter kVA, RMS line voltage, and the phase system to calculate current in amps.
Use RMS line voltage. For three-phase systems, voltage means line-to-line voltage.
Single-phase: I = kVA × 1000 ÷ V · Three-phase: I = kVA × 1000 ÷ (√3 × VLL)
Current
A QUICK WALKTHROUGH
How to use this tool
- Enter apparent power in kVA and RMS line voltage.
- Choose single-phase or three-phase; three-phase voltage is line-to-line voltage.
- Calculate the resulting current in amps.
Formula and phase boundary
Single-phase: I = kVA × 1000 ÷ V. Three-phase: I = kVA × 1000 ÷ (√3 × VLL). Three-phase voltage must be RMS line-to-line voltage.
Calculation boundary
This is a calculation aid using entered values. It does not measure a circuit or size conductors, breakers, generators, or equipment.
Local calculation
Values are processed locally in your browser and are not uploaded.
GOOD TO KNOW
Common questions
What voltage should I use for three-phase?
Use RMS line-to-line voltage (VLL).
Does this include power factor?
No. kVA is apparent power, so power factor is not needed for this conversion.
Can I use phase-to-neutral voltage for three-phase?
No. Convert to or enter line-to-line RMS voltage before calculating.