electrical Calculators

Ohm's Law Calculator

Calculate voltage, current, or resistance using Ohm's Law

Calculate electrical power consumption

Calculate required wire gauge for electrical circuits

Calculate capacitive reactance in AC circuits

Calculate inductive reactance in AC circuits

Calculate electricity usage cost

Calculate transformer turns ratio and secondary voltage

Calculate appropriate circuit breaker size

Calculate current limiting resistor for LEDs

Calculate three phase electrical power

Calculate voltage, current, resistance, and power using Ohm's Law with any two known values

Calculate the minimum wire gauge required for a given current load and distance

Calculate total electrical load and required panel capacity for residential or commercial applications

Calculate real power, apparent power, and reactive power in three-phase electrical systems

Calculate capacitor size needed to improve power factor in electrical systems

Calculate full load current for AC motors based on horsepower, voltage, and efficiency

Calculate transformer KVA rating and current based on load requirements and voltage levels

Calculate conduit fill percentage and maximum number of wires allowed per NEC requirements

Calculate electricity costs based on power consumption, usage hours, and utility rates

Calculate short circuit current and fault current for electrical system protection and equipment sizing