Efficiency Calculator (Input → Output power)

Efficiency: η=(Pout/Pin)×100%

Breakdown

  • Pout: Output power (kW or HP — shaft power).
  • Pin: Input power (electrical, kW).

Examples:

  • Pout=75 kW, Pin=90 → η=(75/90)×100=83.3%

Reverse (Input from Output + Efficiency)

Pin=Pout/η/100
 

PCD Calculator - Electric Motor Flange Bolt Circle Diameter Tool

Calculate electric motor flange PCD (Pitch Circle Diameter) instantly with our free calculator. Enter bolt holes and S dimension for accurate results. Used by engineers worldwide.

e.g., 25.4