Upright Piano Sizing: What the Numbers Mean

Published: 9/20/2026 5:43:05 AM   Clicked: 4

Scanning product listings for upright pianos, the number that comes up most often is height — 121cm, 126cm, and so on. What that number actually represents, and how it affects playing and tone, isn't always clear to families buying their first piano.

An upright's height is the vertical distance from the floor to the top of the lid, and it essentially reflects the length of the strings and soundboard. A taller piano has longer bass strings and a larger soundboard surface, which usually means more noticeable resonance and depth in the bass. Shorter models are constrained internally, so their bass strings have to be wound thicker and shorter, giving a tighter but less resonant low end.

Width and depth vary far less between models — most standard uprights run about 145 to 150cm wide and 55 to 65cm deep, and these two dimensions mainly affect the floor footprint rather than tone. If room height and budget allow, it's generally worth choosing a taller model within the standard range, since that tends to deliver more balanced tone overall.