GS / CALCULATOR
Electrical power and current calculator
Forward and reverse calculation of power, current and power components for single- and three-phase systems.
Start calculating
GS / INPUTS
Complete single- and three-phase power analysis
Enter the supply, direction, voltage, power factor and efficiency. Use line-to-line voltage for three phase.
Inputs
Calculation method
S = P / PF · Q = √(S² − P²) · I₁φ = S×1000/V · I₃φ = S×1000/(√3×V)
Interpreting the result
The three-phase result assumes a balanced load. It does not replace protection, cable, starting-current or manufacturer-data checks.
The result is an initial estimate based on your inputs. Check equipment nameplates, manufacturer data, installation conditions and project requirements before final selection.