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Power & current

Amps to kW calculator

Calculate real electrical power from current, voltage and power factor.

Your values

Example values are prefilled. Replace them with your own.

Supply type
A
V

RMS for AC; line-to-line for three-phase.

PF

Enter the load’s power factor, greater than 0 and at most 1.

Result

Amps to kW
Ready

– – –

Enter your values and press Calculate result.
FormulakW = V × I × PF ÷ 1,000

Within this model

DC or sinusoidal steady-state AC; three-phase loads must be balanced. Enter RMS values for AC and line-to-line voltage for three-phase. Three-phase output is total power across all phases. Uses true power factor; not a maximum-demand calculation.

What the numbers mean

The result is real electrical input power. Apparent power and real power are equal only at unity power factor. A balanced three-phase calculation includes √3 and gives the total for the three phases; do not multiply the result by three again.

Formula reference: Schneider Electric · Electrical Installation Guide ↗

A worked example

230 V × 10 A × 1 ÷ 1,000 = 2.3 kW for single-phase AC.

Validation, precision and limitations

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