The square feet of these rooms determine whether you are going to convert the living space into an individual kids bedroom or for twins siblings etc or simply transform it into a guest bedroom. 245 x 36 is fine for a bedroom it is small but as long as it is at least 24m ceiling height and has sufficient light and ventilation it is a room. Small Bedroom Design For A Single Bed 6ft X 9ft This Room Is Small But Functional Be Aware That It S Small Bedroom Layout Bedroom Dimensions Bedroom Size Then add in a 39 x 75 bed. Average size of kids bedroom . We have 3 kids rooms. What is the size of a small bedroom. However in our research it was not uncommon to find bedrooms that were as large as 12 feet by 12 feet or as small as 10 feet by 10 feet. The average home size in the United States is about 2000 sq ft while the average bedroom size is 200 sq ft. What is the average bedroom size for kids. The average size of a kids bedroom is 11 feet by 12 feet 132 square feet or 1226 square...