For number by native speakers, see List of languages by number of native speakers. A number of sources have compiled lists of languages by their number of speakers. However, all such lists should be used with caution. 1  First, it is difficult to define exactly what constitutes a language as opposed to a dialect.
If you are petite, 19-21 inside inches depth is enough. But if you are tall, get a couch that has 22-24 inches inside depth. The same about the height of the sofa back. Overall Height: While average height is 37 inches, some contemporary sofas are 33-34 inches.
Sofa Seat. Since a comfortable place to sit is the most important function of sofas, the seat height needs to accommodate people of all sizes. The most common measurement is 17 to 18 inches from floor to cushion top, but you can find heights as low as 15 inches and up to 20 inches.