Understanding Grand Pianos

GRAND PIANO is any piano that is horizontal rather than upright and therefore measured in length rather than height. It sits on 3 legs, and the pedals are mounted on a lyre underneath the middle of the keyboard.
BABY GRAND PIANOS are about 5′ in length and are generally made more for decoration than for function. Therefore a baby grand is a great decorative piece of furniture but anyone that can play the piano should really consider a parlor grand. (52″ upright pianos have longer bass strings and more soundboard area than a baby grand).
PARLOR GRAND PIANOS about 6′ in length and are made for home pianists, musicians, students and piano teachers.
SEMI-CONCERT GRAND PIANOS are about 7′ in length and are made for recording studios, small concert halls, churches, and schools, or for the home pianist that has a huge room and simply wants the best sound.
CONCERT GRAND PIANOS are about 9′ in length and are made for large venues (churches, schools, concert halls).
DIGITAL GRAND PIANOS range from 3′ to 5′ in length. High quality digital grand pianos like the Roland GP-607 or Roland GP-609 are capable of feeling and sounding like semi-concert grand pianos but without taking up near the space, not to mention they never need tuning or maintenance.