Electrical Calculators
Quickly convert amps, watts, volts, power factor, kVA, horsepower, and more. Essential toolkit for electrical engineers, electricians, and students.
Amps to Watts
Convert amps (current) to watts (power) for DC and AC circuits.
Watts to Amps
Convert watts (power) to amps (current) for DC and AC circuits.
Watts to Horsepower
Convert electrical power in watts to mechanical horsepower.
Watts to BTU/hr
Convert electrical power (watts) to British thermal units per hour.
Watts to VA
Convert real power to apparent power (VA).
Horsepower to Watts
Convert mechanical HP to electrical power (watts).
BTU/hr to Watts
Convert British thermal units/hr to electrical power (watts).
Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law.
NEC Ampacity Tables
Check allowable ampacity of wires per NEC.
Short Circuit Current
Estimate short-circuit current using transformer data and distance.
Three Phase Power
Calculate power for three-phase electrical systems.
Volts to Watts
Convert volts (V) to actual power (W) in AC/DC circuits.