Electrical Calculators
Professional electrical calculators for voltage drop, wire sizing, conduit fill, ampacity, and more. Based on NEC 2023 standards.
Voltage Drop Calculator
Calculate voltage drop in electrical circuits based on wire gauge, length, and load current per NEC standards.
Open calculatorWire Gauge Calculator
Determine the correct AWG wire gauge based on current, voltage drop limits, and distance per NEC Table 310.16.
Open calculatorConduit Fill Calculator
Calculate conduit fill percentage based on wire count and sizes per NEC Chapter 9 Table 1.
Open calculatorAmpacity Calculator
Determine wire ampacity based on NEC Table 310.16 with temperature and conduit fill correction factors.
Open calculatorElectrical Load Calculator
Calculate total electrical load for residential or commercial buildings per NEC Article 220.
Open calculatorBreaker Size Calculator
Determine the correct circuit breaker size based on wire gauge and load current per NEC 240.6.
Open calculatorTransformer Sizing Calculator
Calculate the required transformer kVA rating based on load requirements.
Open calculatorPower Factor Calculator
Calculate power factor, real power, reactive power, and apparent power for AC circuits.
Open calculatorOhms Law Calculator
Calculate voltage, current, resistance, or power using Ohm's Law (V=IR) and the power formula (P=VI).
Open calculatorWire Resistance Calculator
Calculate the total resistance of a wire run based on gauge, length, and material per NEC Table 9.
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