Kilovolt to Watt Calculator

Convert kilovolts and current to power in watts.

Kilovolt (KV) to Watt (W) Conversion

To convert kilovolts (kV) to watts (W), you need more information—voltage alone is not enough. You must also know:

The current (I) in amperes (A)

The type of current: DC, AC Single Phase, or AC Three Phase

The power factor (PF) for AC circuits (usually between 0.7–1)

DC Systems

Formula: P = V × I

Power (W) = Voltage (V) × Current (A)

For kV to W: P = (kV × 1000) × I

AC Single Phase

Formula: P = V × I × PF

Power (W) = Voltage (V) × Current (A) × Power Factor

For kV to W: P = (kV × 1000) × I × PF

AC Three Phase Line-to-Line (L-L)

Formula: P = √3 × VL-L × I × PF

Power (W) = √3 × Line-to-Line Voltage (V) × Line Current (A) × Power Factor

For kV to W: P = √3 × (kV × 1000) × I × PF

AC Three Phase Line-to-Neutral (L-N)

Formula: P = 3 × VL-N × I × PF

Power (W) = 3 × Line-to-Neutral Voltage (V) × Line Current (A) × Power Factor

For kV to W: P = 3 × (kV × 1000) × I × PF

Where:

  • P = Power in watts (W)
  • V = Voltage in volts (V)
  • kV = Kilovolts (1 kV = 1000 V)
  • I = Current in amperes (A)
  • PF = Power Factor (ranges from 0 to 1, typically 0.8 to 0.95 for most applications).

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