Box Fill Calculator

The box fill calculators help you calculate the suitable box volume with the required capacity to fit the ground wires, conducting wires, clamps, and support fittings.

Enter the number of AWG conductors. The number of each AWG conductor will help you find the minimum box size with the capacity to have all the required devices and equipment.

This electrical box fill calculator is based on the recommendations given by the National electrical code.

You might want to determine the number of rebars or the number of studs.