Electrical Calculators

Wire gauge, voltage drop, circuit load, and electrical cost calculators.

Calculate the correct wire gauge for your electrical project. Accounts for amperage, voltage drop, and wire length.

Calculate voltage drop for electrical wiring. Helps size wires correctly for long runs.

Calculate total electrical load on a circuit. Determine if a circuit can handle additional outlets or appliances.

Convert between watts, amps, and volts to size circuits and estimate electrical load.

Calculate amperage from wattage and voltage to select the right breaker and wire size.

Determine the maximum number of wires in conduit by type and trade size per NEC fill limits.

Estimate the lumens and fixtures needed to light a room based on area, foot-candles, and fixture output.