Electrical Calculators

Free online electrical calculators calculators and converters. Browse all electrical calculators tools on EveryCalc.

Calculate voltage, current, or resistance using Ohm's Law. Enter any two values to find the third instantly.

Calculate total resistance of resistors connected in series. Add up to 10 resistors and get the combined resistance instantly.

Calculate total resistance of resistors connected in parallel. Enter up to 4 resistor values.

Calculate electrical power from voltage, current, or resistance. Enter any two values to find power in watts.

Calculate the cost of running an appliance based on wattage, hours of use, and electricity rate.

Calculate output voltage of a resistive voltage divider circuit. Enter input voltage and resistor values.

Calculate voltage drop across a wire based on wire gauge, length, and current. Ensure NEC compliance.

Convert amps (A) to milliamps (mA) instantly. Simple amp to milliamp conversion calculator.

Calculate how current splits between parallel resistors using the current divider formula.

Look up wire diameter, cross-sectional area, and resistance per foot for any AWG wire gauge size.