Orchestra Instrument Sizing

Have the child stand with the left arm fully extended to the side, then measure the distance from the neck to the middle of the palm.

Violin Size Arm Length
1 / 4    18” – 20”
1 / 2    20”– 22”
3 / 4    22’ – 23”
4 / 4    23” +

Viola Size Arm Length
10”    18” – 20”
12”    20” – 22”
13”    22 ”- 23”
14”    23” – 24”
15” – 15.5”    25”+

Cello Size Arm Length Height
1 /4    18” – 20” 3.5’ – 4’
1 /2    20” – 22” 4.0’ – 4.5’
3 /4    22” – 24” 4.5 – 5.0’
4/4    24” + 5.0’ & up