kW to Amps Calculator logo
kW to Amps Calculator

kW to Amps & Amps to kW Calculator

DC, single-phase, and three-phase (L-L / L-N) with unit pickers and power factor. Results update instantly.

Mode: kW to Amps

Decimals:
8

Typical PF: resistive 1.0, motors 0.8–0.95.

A
mA
Formula used: I = P / V

How the kW to Amps Calculator Works

This calculator converts between power and current for DC, single-phase AC, and three-phase AC systems. Enter either power and voltage to get current, or enter current and voltage to get power. You can select units (mW, W, kW and mV, V, kV) and adjust the power factor for AC systems.

  • DC: I = P / V
  • AC single-phase: I = P / (V × PF)
  • AC three-phase (L-L): I = P / (√3 × V LL × PF)
  • AC three-phase (L-N): I = P / (3 × V LN × PF)

Kilowatts to Amps

Enter power in mW, W, or kW plus system type, voltage, and PF (for AC). The current in amps and milliamps is updated instantly without any “calculate” button.

Amps to Kilowatts

Switch to Amps to kW mode using the toggle. Provide amps, voltage, system, and PF; we compute real power in kW for your configuration.

Three-Phase Systems

Choose line-to-line (VLL) or line-to-neutral (VLN) depending on your nameplate or supply. Formulas adjust automatically so you don’t have to memorize them.

Typical Power Factor Values

  • Purely resistive heater: 1.00
  • LED drivers: 0.9–0.98
  • Induction motors: 0.75–0.9
  • Corrected motors with capacitors: 0.95–1.00

Frequently Asked Questions

How many amps is 1 kW?
Depends on voltage and system. Example: DC at 230 V → 1000 ÷ 230 ≈ 4.35 A. Single-phase: I = 1000 ÷ (V × PF). Three-phase (L-L): I = 1000 ÷ (√3 × VLL × PF).
How many kilowatts is 1 ampere?
DC: kW = (V × 1) ÷ 1000. For 240 V → 0.24 kW. For AC, multiply by PF and use the right single-phase or three-phase formula.
How many amps make 1 kWh?
kWh is energy. You must include voltage, PF, and time. For example, 10 A at 230 V, PF 1 for 1 hour ≈ 2.3 kWh.
What is 5 kW in amps?
Single-phase 240 V, PF 0.9 → I ≈ 5000 ÷ (240 × 0.9) ≈ 23.15 A. Three-phase 400 V L-L, PF 0.9 → I ≈ 5000 ÷ (√3 × 400 × 0.9) ≈ 8.01 A.

This tool is for informational and educational purposes only. For wiring, protection devices, and safety-critical design, always follow applicable codes and consult a qualified electrician or engineer.