How do I convert kVA to amps?
Multiply kVA by 1000 and divide by voltage. For balanced three phase, also divide by √3.
Apparent power to current
kVA to Amps Calculator
Convert kilovolt-amperes to current for single-phase or balanced three-phase AC systems using the operating line voltage.
Interactive calculator
kVA to Amps Calculator
Result
14.43 A
A = kVA × 1000 ÷ (√3 × V)
Live circuit diagram
kVA to Amps Calculator visualized in real time
Values update as you use the calculator.
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Calculated output
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Quick answers
kVA to Amps Calculator: quick answers
Get concise answers to the most common kva to amps calculator questions before reviewing the formulas, examples, and detailed guidance below.
What is 10 kVA at 230 V in amps?
For single phase, 10 kVA at 230 V is approximately 43.48 A.
What is 10 kVA at 400 V three phase?
It is approximately 14.43 A for a balanced system.
Formula
kVA to amps formulas
Choose the formula that matches the electrical system and known values.
Single-phase AC
A = kVA × 1000 ÷ V
Use RMS voltage for the single-phase supply.
Three-phase AC
A = kVA × 1000 ÷ (√3 × V)
Use line-to-line voltage for a balanced three-phase system.
Apparent power check
kVA = A × V ÷ 1000
For three phase, multiply by √3.
How to use
Calculate in five clear steps
Check every unit and use measured or nameplate values where possible.
- 1. Select single-phase or three-phase AC.
- 2. Enter apparent power in kVA.
- 3. Enter operating voltage in volts.
- 4. Review current in amperes.
- 5. Apply demand, derating, protection, and code requirements separately.
Worked examples
Practical calculation examples
Examples make the formula and its assumptions easier to verify.
5 kVA at 230 V, single phase
21.74 A
10 kVA at 230 V, single phase
43.48 A
10 kVA at 400 V, three phase
14.43 A
25 kVA at 415 V, three phase
34.78 A
50 kVA at 400 V, three phase
72.17 A
100 kVA at 480 V, three phase
120.28 A
Accuracy
Common mistakes and limitations
The result is only as reliable as the selected formula and input data.
Conversion library
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Continue from the kVA to Amps Calculator to a dedicated conversion tool for watts, amps, volts, kW, kVA, energy, batteries, or circuit calculations. Each linked page includes its own formula, examples, and guidance.
FAQ
kVA to amps questions
Direct answers to common calculation questions.
How do I convert kVA to amps?
Multiply kVA by 1000 and divide by voltage. For balanced three phase, also divide by √3.
What is 10 kVA at 230 V in amps?
For single phase, 10 kVA at 230 V is approximately 43.48 A.
What is 10 kVA at 400 V three phase?
It is approximately 14.43 A for a balanced system.
Is power factor needed?
No. kVA is apparent power, so kVA-to-amps conversion does not require power factor.
Which voltage should I enter?
Use RMS voltage for single phase and line-to-line voltage for the three-phase formula.
Why does three phase use √3?
It accounts for the relationship between line and phase quantities in a balanced system.
Can this size a breaker?
No. Breaker sizing also requires code rules, continuous-load treatment, starting current, and conductor information.
Does this work for unbalanced loads?
The three-phase formula assumes balanced loading.
Are generator kVA ratings suitable inputs?
Yes for a nominal current estimate, subject to generator voltage, duty, and manufacturer limits.
Why might measured current differ?
Voltage variation, phase imbalance, harmonics, loading, and instrument accuracy can change measured current.
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