On a top loading washing machine, the radius is the distance from the inside edge of the tub wall to the center of the agitator cylinder.

To measure the dimensions of the washing machine, the owner can multiply the area of the washing machine’s inner tub by the height. The dimensions indicate the volume of water that each machine can hold. This number is usually measured in cubic feet. To determine the operating capability of a particular machine, the owner will need to measure the height and width of his washer tub. This equation can be used to find the volume of a dryer as well as a washer.

The radius of a front loading machine is determined by measuring from a top to bottom wall to find the diameter and then dividing it in half.

To calculate the area of the bathtub, the homeowner can use the same mathematical equation that is used to determine the area of a circle. The area of a circle can be found by multiplying pi by the radius of the circle, squared. The radius of a top-loading washing machine bowl is measured from the inside edge of the bowl wall to the center of the agitator cylinder. The radius of a front loading machine can be calculated by measuring from a top to bottom wall to find the diameter. This number, when divided in half, gives the radius. To square this number, it is multiplied by itself.

Stackable units are usually slightly smaller than a traditional washing machine.

A washer with an inner tub that is 15 inches (38.1 centimeters) deep and has a diameter of 20 inches (50.8 centimeters) will have a radius of 10 inches (25.4 centimeters). The radius of this machine squared is 100 inches. That number is then multiplied by pi, which is 3.14, to determine the area. 100 x 3.14 = 314 inches. The area of this example washer unit is 314 inches (797.56 centimeters), which can then be used to determine the dimensions of the washing machine in terms of volume.

The dimensions of a washing machine will determine the amount of detergent needed.

The volume of the machine can be found by multiplying the height by the area of the inner bowl. The area of the example washer was calculated to be 314 inches, which gives a volume of 4,710 cubic inches (11,963.4 centimeters). 314 inches of area x 15 inches of height = 4,710 cubic inches.

The volume of the machine, once calculated in cubic inches, must be converted to cubic feet to find the exact dimensions of the washing machine. There are 1,728 cubic inches for every cubic foot. The example washer has a volume of 4,710 cubic inches, which can be divided into 2.73 cubic feet. 4,710 cubic inches / 1,728 cubic inches = 2.73 cubic feet (0.077304 cubic meters).

Washing machine dimensions may not always be listed in cubic feet. In such cases, the manufacturer normally provides the machine’s specifications in terms of height, width and depth. Some machines may also have a value for the maximum weight capacity they can support, usually listed in kilograms. This is a measure of the unit’s weight-bearing capabilities and cannot be determined by calculating the internal dimensions, which are a measure of volume.