Electricity Calculators

Voltage drop, cable sizing, solar output and energy cost calculators for electrical work.

Calculate the running cost of an appliance or load from its wattage, daily hours and electricity rate.

Convert kilowatts to amps for single-phase or three-phase AC circuits using voltage and power factor.

Calculate or verify the check digit (11th character) of an Australian National Metering Identifier.

Estimate daily and annual kWh output from a solar array given its size, peak sun hours and system losses.

Calculate the voltage drop across a single-phase cable run from current, length and conductor size.