Electrical Power Calculator

Calculate electrical power, current, and cable sizing for single-phase and three-phase systems. Supports IEC and common industrial voltage levels.

Phase system

Voltage

Calculate from

Active powerkW

Power factor (cos phi)

Efficiency

Cable length (one way)m

Max voltage drop%

Conductor material

Active power (P)–

Apparent power (S)–

Reactive power (Q)–

Line current–

Absorbed power (from grid)–

Min. cable cross-section–

Actual voltage drop–

–

Line current