Power & phase

kW to Amps Calculator

Current equals kilowatts multiplied by 1,000 and divided by voltage, power factor, and the applicable phase factor. Three-phase mode uses line-to-line voltage.

Convert kilowatts to current for DC, single-phase, or balanced three-phase systems.

Calculated result

Calculated current

Calculating…

Calculated locally in your browser

Planning math only. Verify equipment specifications and installation requirements separately.

kW to Amps Calculator relationship diagram. The illustration supports the text result; it is not a wiring or installation drawing.

What this calculator returns

Use line-to-line voltage in three-phase mode and the load's actual power factor.

Formula and variables

The calculation runs entirely in your browser. Static formulas, definitions, examples, and tables remain readable without JavaScript.

Formula

I = 1000 × kW / (phase factor × V × PF).

P: Real power, in watts or kilowatts.
S: Apparent power, in volt-amperes or kilovolt-amperes.
V: RMS voltage; line-to-line voltage in three-phase modes.
I: Line or circuit current, in amperes.
PF: Power factor, expressed as a ratio from greater than zero through one.
Q: Reactive power, in volt-amperes reactive.

The phase factor is 1 for DC/1φ and √3 for balanced 3φ.

Worked example

Worked example inputs and result
Input	Value
System type	Three-phase AC
Real power	10 kW
Voltage	480 V
Result	10 kW at 480 V three-phase and PF 0.9 is about 13.36 A.

10 kW at 480 V three-phase and PF 0.9 is about 13.36 A.

Reference table

Common-voltage conversion examples derived from P = V × I at power factor 1. Three-phase examples require the separate √3 relationship.
Voltage	Amps at 1 kW	Amps at 5 kW	Watts at 10 A
120 V	8.33 A	41.67 A	1,200 W
208 V	4.81 A	24.04 A	2,080 W
240 V	4.17 A	20.83 A	2,400 W
480 V	2.08 A	10.42 A	4,800 W

Frequently asked questions

Is this kW-to-amps result code compliant?

No. PowerTotals performs transparent electrical math and planning estimates. Installation decisions must be checked against equipment documentation, the adopted code, and the authority having jurisdiction.

Are my inputs uploaded?

No. Calculations run locally in your browser, and analytics never receives raw electrical values.

Assumptions and limitations

Balanced three-phase system assumed.
No motor nameplate or code-table substitution.

Method and sources

Read the calculation methodology, review the technical sources, or browse the reference table index. Last reviewed 2026-08-13.