Mini refrigerators, or compact refrigerators, range from 1.7 cubic feet to 4.5 cubic feet. The smallest cube mini refrigerator in 2015 is 17 inches wide, 18.9 inches deep and 20.5 inches tall.
Mini refrigerators may also have a separate freezer, giving them somewhat more space. For example, such a freezer would be around 4.5 cubic feet. The Magic Chef Mini Refrigerator has an interior volume of 3.5 cubic feet and stands 32.5 inches high. According to the Mini Fridge Buying Guide published by eBay, the average height of a mid-size mini fridge is 26 inches, with an average interior capacity of 2.6 cubic feet.