How do I convert amps to kVA?
For single phase, multiply amps by volts and divide by 1000. For balanced three phase, also multiply by √3.
Apparent power conversion
Amps to kVA Calculator
Convert current and voltage into apparent power for single-phase or balanced three-phase AC systems. No power factor is required because kVA represents apparent power.
Interactive calculator
Amps to kVA Calculator
Result
2.30 kVA
kVA = A × V ÷ 1000
Live circuit diagram
Amps to kVA Calculator visualized in real time
Values update as you use the calculator.
Input
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Circuit setting
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Calculated output
Enter values to see the live result
Quick answers
Amps to kVA Calculator: quick answers
Get concise answers to the most common amps to kva calculator questions before reviewing the formulas, examples, and detailed guidance below.
Does amps to kVA need power factor?
No. Power factor is used when converting apparent power to real power in kW.
What is 10 amps at 230 volts in kVA?
A single-phase 230 V load at 10 A is 2.30 kVA.
Formula
Amps to kVA formulas
Choose the formula that matches the electrical system and known values.
Single-phase AC
kVA = A × V ÷ 1000
Multiply line current by voltage, then convert VA to kVA.
Three-phase AC
kVA = √3 × A × V ÷ 1000
Use line-to-line voltage for a balanced three-phase load.
Inverse check
A = kVA × 1000 ÷ V
For three phase, also divide 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 current in amperes.
- 3. Enter operating voltage in volts.
- 4. Read the apparent-power result in kVA.
- 5. Confirm phase, loading, and equipment ratings before design use.
Worked examples
Practical calculation examples
Examples make the formula and its assumptions easier to verify.
10 A at 230 V, single phase
2.30 kVA
16 A at 230 V, single phase
3.68 kVA
20 A at 400 V, three phase
13.86 kVA
32 A at 415 V, three phase
23.00 kVA
63 A at 400 V, three phase
43.65 kVA
100 A at 480 V, three phase
83.14 kVA
Accuracy
Common mistakes and limitations
The result is only as reliable as the selected formula and input data.
Conversion library
Explore all 44 electrical calculators
Continue from the Amps to kVA 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
Amps to kVA questions
Direct answers to common calculation questions.
How do I convert amps to kVA?
For single phase, multiply amps by volts and divide by 1000. For balanced three phase, also multiply by √3.
Does amps to kVA need power factor?
No. Power factor is used when converting apparent power to real power in kW.
What is 10 amps at 230 volts in kVA?
A single-phase 230 V load at 10 A is 2.30 kVA.
Why is √3 used for three phase?
It represents the relationship between line and phase quantities in a balanced three-phase system.
Should I enter line voltage?
Yes, enter line-to-line voltage for the three-phase formula.
Are kVA and kW the same?
Only at power factor 1. Normally, kW equals kVA multiplied by power factor.
Can this size a transformer?
It provides a load estimate; final sizing must include demand, harmonics, temperature, and starting loads.
Does it work for unbalanced loads?
No. The three-phase result assumes a balanced system.
Can I use DC amps to calculate kVA?
kVA is normally an AC rating. Use watts or kilowatts for DC power.
How accurate is the result?
The formula is exact for its assumptions; practical accuracy depends on correct current, voltage, and phase inputs.
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