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Amps to kilowatts calculator

Convert current to real power for single-phase or three-phase circuits.

A
V

Real power– kW

  • Single phase: kW = A × V × PF ÷ 1000
  • Three phase, line to line: kW = 1.732 × A × V × PF ÷ 1000
  • Three phase, line to neutral: kW = 3 × A × V × PF ÷ 1000
Confirm sizing with a qualified engineer

These calculators give estimates for planning only. Motor starting, harmonics, altitude, temperature and future loads all affect generator size. Have the final selection confirmed by a qualified engineer or electrician. Ask our engineers.