Fast amps to kVA calculator. Just enter the amperage and voltage, choose phase and power factor, and get instant results using kVA = Amps × Volts ÷ 1000. E
Amps to kVA Calculator
Related: kVA to Amps Calculator
How to Convert Amps to kVA Step by Step
The conversion depends on whether your system is single-phase or three-phase.
Single-Phase Amps to kVA Formula
kVA = (Amps × Volts) ÷ (1000 × Power Factor)
Three-Phase Amps to kVA Formula
kVA = (Amps × Volts × √3) ÷ (1000 × Power Factor)
Power factor (PF) represents how efficiently electrical power is used. Typical PF is 0.8 for most equipment.
Amps to kVA Conversion Examples
Example 1: Single Phase
A 20A device running at 240V with PF = 0.8
kVA = (20 × 240) ÷ (1000 × 0.8) = 6 kVA
Example 2: Three Phase
A 50A motor at 415V with PF = 0.85
kVA = (50 × 415 × √3) ÷ (1000 × 0.85) ≈ 42.3 kVA
Amps to kVA Chart
Amps to kVA Conversion Chart
All calculations use PF = 0.8 — the most common power factor.
Single-Phase (kVA = Amps × Volts ÷ (1000 × PF))
| Amps (A) | Voltage (V) | kVA (Approx.) |
|---|---|---|
| 20 A | 240 V | 6.0 kVA |
| 25 A | 240 V | 7.5 kVA |
| 50 A | 240 V | 15.0 kVA |
| 80 A | 240 V | 24.0 kVA |
| 100 A | 240 V | 30.0 kVA |
| 200 A | 240 V | 60.0 kVA |
| 300 A | 240 V | 90.0 kVA |
| 800 A | 240 V | 240.0 kVA |
| 1000 A | 240 V | 300.0 kVA |
| 12V (Amp to kVA) | 12 V | (Amps × 12) ÷ 800 |
Example:
- 100A at 12V → 1.5 kVA
- Formula is included so the user can calculate any 12V value.
Three-Phase (kVA = Amps × Volts × √3 ÷ (1000 × PF))
The most searched three-phase voltage is 415V, so the chart uses that.
| Amps (A) | Voltage (V) | kVA (Approx.) |
|---|---|---|
| 20 A | 415 V | 17.9 kVA |
| 25 A | 415 V | 22.4 kVA |
| 50 A | 415 V | 44.7 kVA |
| 80 A | 415 V | 71.5 kVA |
| 100 A | 415 V | 89.4 kVA |
| 200 A | 415 V | 178.9 kVA |
| 300 A | 415 V | 268.3 kVA |
| 800 A | 415 V | 715.6 kVA |
| 1000 A | 415 V | 894.5 kVA |
Amps to kVA Calculator
Using our Amps to kVA Calculator is quick and beginner-friendly. You don’t need any electrical background — just enter the values, and the tool does the math instantly.
