Kilowatts to Amps Calculator

Q: How many amps are in 1 kW?

It depends on voltage and whether the system is DC or AC. Example: DC at 240 V → I = 1000 / 240 ≈ 4.17 A. For single-phase AC (PF=1) at 230 V → I ≈ 4.35 A. Use the calculator above for exact values.

Q: How many kW is 40 amps?

It depends on voltage and power factor. For single-phase at 230 V and PF=1: P = V × I = 230 × 40 = 9200 W → 9.2 kW. For three-phase (line-to-line 400 V, PF=1): P = √3 × V × I ≈ 1.732×400×40 ≈ 27.7 kW.

Q: How many amps is 10 kW?

Depends on voltage/system. Example: single-phase 230 V, PF=1 → I = 10000 / 230 ≈ 43.48 A. Three-phase 400 V, PF=0.9 → I = 10000 / (√3×400×0.9) ≈ 16.01 A.

Q: How many kilowatts is 200 amps?

Depends on voltage and system. Example: single-phase 230 V, PF=1 → P = 230×200 = 46,000 W → 46 kW. Three-phase 400 V, PF=0.9 → P = √3×400×200×0.9 ≈ 124,800 W → 124.8 kW.

How kilowatts to amps Calculator Works

The calculator converts active power (kW) to current (A) using standard electrical formulas. Choose DC, AC single-phase or AC three-phase, enter the voltage and the power factor (for AC). Results update instantly as you type.

DC kilowatts to amps calculation

Formula: I = (P × 1000) / V
Where P is kW and V is DC voltage in volts. Example: 1 kW at 240 V → I = 1000 / 240 ≈ 4.1667 A.

AC single phase kilowatts to amps calculation

Formula: I = (P × 1000) / (V × PF)
Where PF is the power factor (0–1). Example: 10 kW, 230 V, PF=0.9 → I ≈ 10000 / (230×0.9) ≈ 48.3 A.

AC three phase kilowatts to amps calculation

Two common forms depending on voltage input:

Calculation with line to line voltage

When using line-to-line voltage V_LL: I = (P × 1000) / (√3 × V_LL × PF).

Calculation with line to neutral voltage

When using line-to-neutral voltage V_LN: I = (P × 1000) / (3 × V_LN × PF) (because V_LL = √3 × V_LN, which leads to P = 3 × V_LN × I × PF).

Typical power factor values

Resistive heater / incandescent lamp: ~1.0
Induction motor (lightly loaded): 0.65–0.85
Motors under load / modern industrial: 0.8–0.95
Electronic supplies / converters: 0.9–0.99 (with PF correction)

Write how to improve this page

If you'd like improvements: add unit presets (common voltages), allow input of kVA vs kW, include harmonic / non-linear load guidance, add downloadable quick-reference tables, and embed interactive diagrams for single/three-phase wiring. Feedback? Contact us.

ELECTRICAL CALCULATORS

RAPID TABLES

FAQ

How many amps are in 1 kW?

Depends on voltage and system: DC: I = 1000 / V. Single-phase AC: I = 1000 / (V×PF). Three-phase AC: I = 1000 / (√3×V×PF) when V is line-to-line.

How many kW is 40 amps?

Calculate P = V × I × PF for single-phase, or P = √3 × V × I × PF for three-phase (V = line-to-line). Use the calculator above with your voltage and PF.

How many amps is 10 kW?

Example: single-phase 230 V, PF=1 → ~43.48 A. Three-phase 400 V, PF=0.9 → ~16.01 A. Enter your system details above for exact value.

How many kilowatts is 200 amps?

Depends on voltage/system. Single-phase P = V×I. Three-phase P = √3×V×I×PF. Try the reverse calculation by entering current and voltage (or use our Amps → kW tool).