kVA to Amps Calculator
Convert apparent kVA to line current with voltage. Single-phase: I = kVA × 1000 / V. Three-phase includes √3. Default 5 kVA at 240 V single-phase is about 20.833 A. Informational only.
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How to convert kVA to amps
- Enter kVA and line voltage.
- Pick single-phase or three-phase. Default is single-phase.
- Read current in amps.
- Real kW still needs power factor on kVA to kW. Nothing is uploaded.
kVA to amps
I from kVA and volts
| Single-phase | I = kVA × 1000 / V |
|---|---|
| Three-phase | I = kVA × 1000 / (√3 V) line-to-line model |
| Apparent | kVA is not real kW without PF |
| Default | 5 kVA, 240 V, 1ph → ~20.83 A |
| Voltage | Line-to-line for 3ph as engine expects |
| Approval | Informational. Not wire sizing. |
Single-phase current
I = kVA × 1000 / V. Five kVA at 240 V gives 5000/240 ≈ 20.833 A apparent.
Three-phase factor
The engine divides by √3 for three-phase selections. Confirm your voltage is line-to-line as your diagram expects.
Real power
Multiply kVA by PF on kVA to kW before comparing to mechanical load power.
Wire sizing
Ampacity tables live on wire ampacity. Voltage drop is voltage drop.
Limits
Balanced AC snapshot.
The formula runs in this tab. CZNull does not receive the numbers.
Informational only. Not wiring, code, or manufacturer approval. See the disclaimer.
What current is 5 kVA at 240 V single-phase?
About 20.833 A. Compute 5000 VA divided by 240 V.
Where does √3 appear?
Three-phase mode uses I = kVA×1000 / (√3 V) in the engine.
Is this RMS amps?
Yes for AC steady-state apparent current implied by kVA and voltage.
Do I enter PF here?
No. PF is for kW conversions. This page is apparent kVA to amps.
How do I go from amps back to kVA?
Use amps to kVA with the same voltage and phase.