What is the kW to amps formula?
Divide kW × 1000 by voltage and, for AC, power factor; three phase also uses √3.
Real power to current
kW to Amps Calculator
Convert kilowatts to amperes for DC, single-phase AC, and balanced three-phase AC systems using voltage and power factor.
Interactive calculator
kW to Amps Calculator
Result
27.17 A
A = kW × 1000 ÷ (V × PF)
Live circuit diagram
kW to Amps Calculator visualized in real time
Values update as you use the calculator.
Input
—
Circuit setting
—
Calculated output
Enter values to see the live result
Quick answers
kW to Amps Calculator: quick answers
Get concise answers to the most common kw to amps calculator questions before reviewing the formulas, examples, and detailed guidance below.
What is a practical kW to amps example?
10 kW at 400 V three phase and PF 0.8 is about 18.04 A.
Why do units matter?
A missed factor of 1000 can make the result unusable, so confirm every input and output unit.
Formula
kW to amps formulas
Choose the formula that matches the electrical system and known values.
DC
A = kW × 1000 ÷ V
Direct-current relationship.
Single-phase AC
A = kW × 1000 ÷ (V × PF)
Use RMS voltage and load power factor.
Three-phase AC
A = kW × 1000 ÷ (√3 × V × PF)
Use line voltage for a balanced load.
How to use
Calculate in five clear steps
Check every unit and use measured or nameplate values where possible.
- 1. Choose DC, single phase, or three phase.
- 2. Enter real power in kW.
- 3. Enter operating voltage.
- 4. Enter power factor for AC.
- 5. Review current and apply design checks.
Worked examples
Practical calculation examples
Examples make the formula and its assumptions easier to verify.
2.3 kW at 230 V DC
10 A
5 kW at 230 V, PF 0.8
27.17 A
10 kW at 400 V 3-phase, PF 0.8
18.04 A
15 kW at 415 V 3-phase, PF 0.9
23.19 A
25 kW at 480 V 3-phase, PF 0.9
33.41 A
50 kW at 400 V 3-phase, PF 0.85
84.90 A
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 kW 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
kW to amps questions
Direct answers to common calculation questions.
What is the kW to amps formula?
Divide kW × 1000 by voltage and, for AC, power factor; three phase also uses √3.
What is a practical kW to amps example?
10 kW at 400 V three phase and PF 0.8 is about 18.04 A.
Why do units matter?
A missed factor of 1000 can make the result unusable, so confirm every input and output unit.
Does power factor matter?
Yes for AC current; DC does not use power factor.
Can I use nameplate values?
Yes. Nameplate or reliable measured values are preferred for planning calculations.
Does this replace electrical design?
No. Final work requires code checks, equipment data, installation conditions, and qualified review.
Can I use decimal values?
Yes. Enter positive decimal values using consistent units.
Why might measured results differ?
Voltage variation, load changes, efficiency, harmonics, and instrument accuracy can affect field measurements.
Is the calculator free?
Yes. The calculator runs instantly without registration.
Can I copy the result?
Yes. Use the copy button beneath the calculated result.
Related calculators
Continue converting electrical values
Use related published tools for the next step in your calculation.