Instrument Sizing Chart

Extended Arm

Violin

Have your child extend their left arm out in front of them with their palm up and their fingers flat. Measure from the base of the neck to the center of the palm in inches.

Minimum Arm LengthInstrument Size
14 1/2″1/16
16″1/10
17 1/2″1/8
19″1/4
20 3/4″1/2
22″3/4
23 1/2″4/4
Extended Arm

Viola

Have your child extend their left arm out in front of them with their palm up and their fingers flat. Measure from the base of the neck to the center of the palm in inches.

Minimum Arm LengthInstrument Size
19″11″
20 3/4″12″
22″13″
23 1/2″14″
2 5″15″
25 7 /8″15-1/2″
26 3/8″16″
27 1/8″16-1/2″
Extended Arm

Cello

Have your child extend their left arm out in front of them with their palm up and their fingers flat. Measure from the base of the neck to the center of the palm in inches.

Arm LengthHeightInstrument Size
16″3′1/10
16″ – 18″3′ – 3’6″1/8
18″ – 20″4′1/4
20″ – 22″4′ – 4’6″1/2
22″ – 24″4’6″ – 5′3/4
24″ and up5′ and up4/4
Finger Span

Finger Span

To measure finger span, have your child extend their fingers on their left hand. Measure from their index finger to their pinky finger in inches.

Finger SpanInstrument Size
2.5″ – 3″1/10
3″1/8
3″ – 4″1/4
4″ – 5″1/2
5″ – 6″3/4
6″ and up4/4