There are various heights, finishes, and cabinets in upright
pianos to meet your needs. The height of an upright piano is
measured from the floor to the top of the piano. The size (height &
width) of the piano is probably the most important factor
influencing the tone quality and volume. The taller the piano, the
longer the strings the bigger the soundboard, both of which produce
a louder sound. A spinet piano is the shortest of all the uprights,
standing between 35" to 39" tall, and has the lowest cost. The next size
is the console piano which ranges from 40" to 43". A step up from the console
is the studio piano which stands 44" to 48" tall and due
sturdy character is the most common piano found in schools, studios and living rooms.
Then there are professional uprights ("full size") with heights ranging from 48" to 52" tall. Some of
these tall uprights have longer strings and larger soundboards
than some of the smaller grand pianos.
Each brand has its own names for its own models, but essentially
almost all upright
piano models are classified by the height.