CNET's washer buying guide includes a short chart describing the most common sizes of washers. The website compares four sizes by width and maximum capacity in both pounds and cubic feet.
The buying guide on CNET.com shows common sizes for washer-dryers, compact washers, full-size top-loading washers and front-loading washers. According to the guide, front-loading washers have a width of 27 inches or more and a capacity of 12 to 20 pounds; these dimensions are very similar to those of full-size top-loading washers. Compact washers have a width of 24 inches or less, and a maximum capacity of 12 pounds, while washer-dryer combinations fit 8 pounds of clothing into a 23-inch width.