Current • Voltage • Power
Calculate Current, Voltage and Power
Here you'll find calculators for current, power, voltage and conversions between watts, kilowatts and amps.
Calculator
Calculate Current
General current calculator for electrical power and voltage.
Calculator
Calculate Current – Single-Phase
Calculate current for single-phase from power, voltage and cos φ.
Calculator
Calculate Current – Three-Phase
Calculate current for three-phase from power, voltage and cos φ.
Calculator
Calculate Power – Single-Phase
Calculate power for single-phase from voltage, current and cos φ.
Calculator
Calculate Power – Three-Phase
Calculate power for three-phase from voltage, current and cos φ.
Calculator
Convert kW to Amps
Convert kilowatts to amps for single-phase or three-phase systems.
Calculator
Convert Amps to kW
Convert amps to kilowatts for single-phase or three-phase systems.
Calculator
Ohm's Law – Calculate Voltage
Calculate voltage from current and resistance.
Calculator
Calculate Fuse Rating
Roughly determine a suitable fuse rating from power and voltage.
Notes on Usage
These calculators use technically correct formulas including the power factor cos φ, where relevant to the calculation.