kW to Amps Calculator

Convert kilowatts to amps for DC, single-phase AC, and three-phase AC systems with accurate voltage and power factor calculations.

Electrical Safety:

This calculator provides mathematical conversions for informational purposes only. Electrical work should only be performed by qualified professionals. Not a substitute for professional electrical advice.

kW to Amps Calculator

Current Results

Enter values and select system type to calculate

kW to Amps Calculator

Electrical calculations can be tricky because power, voltage, and current are interconnected in complex ways. Our calculator handles both directions of conversion - from kilowatts to amps and from amps to kilowatts - for DC, single-phase AC, and three-phase AC systems with accurate voltage and power factor considerations.

Two-Way Electrical Calculations

This calculator provides two calculation modes to meet different needs:

kW to Amps Mode:
Perfect for determining wire sizes, circuit breaker ratings, and electrical safety when you know the power consumption and voltage.
Amps to kW Mode:
Ideal for calculating total power consumption when you know the current draw and voltage of electrical equipment.

Core Electrical Formulas

Different electrical systems use different formulas because they handle power differently:

DC Power: P = V × I
DC Current: I = P ÷ V
AC Single Phase Power: P = V × I × PF
AC Single Phase Current: I = P ÷ (V × PF)
AC Three Phase Power: P = √3 × V × I × PF
AC Three Phase Current: I = P ÷ (√3 × V × PF)

Power factor is crucial in AC systems because it accounts for the phase difference between voltage and current. Three-phase systems distribute power across three conductors with 120-degree phase offsets.

Practical Conversion Examples

System Type Power Voltage Current Power Factor
DC 24 W 12 V 2 A —
DC 1000 W 120 V 8.33 A —
DC 3000 W 48 V 62.5 A —
Single-phase AC 1000 W 120 V 8.33 A 1.0
Single-phase AC 2000 W 230 V 8.70 A 1.0
Single-phase AC 1500 W 240 V 6.25 A 1.0
Three-phase AC 3000 W 400 V 4.33 A 1.0
Three-phase AC 5000 W 415 V 6.95 A 0.9
Three-phase AC 10000 W 480 V 12.89 A 0.85
DC 500 W 24 V 20.83 A —
DC 2000 W 110 V 18.18 A —
Single-phase AC 750 W 120 V 6.25 A 1.0
Single-phase AC 3000 W 220 V 13.64 A 1.0
Single-phase AC 5000 W 240 V 20.83 A 1.0
Three-phase AC 7500 W 380 V 11.42 A 0.9
Three-phase AC 15000 W 440 V 19.74 A 0.85
DC 750 W 36 V 20.83 A —
DC 2500 W 60 V 41.67 A —
Single-phase AC 1800 W 230 V 7.83 A 1.0
Single-phase AC 4000 W 240 V 16.67 A 0.95
Three-phase AC 8000 W 400 V 11.55 A 0.9
Three-phase AC 12000 W 480 V 14.43 A 0.9
DC 1500 W 72 V 20.83 A —
DC 4000 W 96 V 41.67 A —
Single-phase AC 2500 W 220 V 11.36 A 1.0
Single-phase AC 6000 W 240 V 25.0 A 1.0
Three-phase AC 9000 W 415 V 12.58 A 0.85
Three-phase AC 18000 W 440 V 23.62 A 0.9

When to Use Each Calculation Direction

kW to Amps: Use when you know the power rating and voltage, but need to determine current draw. Essential for wire sizing, breaker selection, and electrical safety calculations.

Amps to kW: Use when you know the current draw and voltage, but need to calculate total power consumption. Useful for energy cost calculations and load analysis.

Electrical System Types

DC Systems: Direct current used in batteries, solar panels, electronics, and some industrial applications. Simplest calculations with no power factor.

Single-Phase AC: Most common residential and small commercial systems. Power factor accounts for the efficiency of electrical equipment.

Three-Phase AC: Industrial and commercial applications with heavy machinery. More efficient power transmission with √3 factor in calculations.

While this calculator provides accurate mathematical results, electrical work involves safety considerations that go beyond calculations. Always consult licensed electricians for installation and modification work, and verify local electrical codes before making changes to any electrical system.