Choosing the correct violin size makes playing more comfortable and learning much easier. A violin that’s too big strains the arm, wrist and fingers; one that fits lets a student focus on making music. Enter an arm length or a school grade below to find the right size.

How to Measure for a Violin

1. Have the player stand up straight and hold the left arm straight out to the side, parallel to the floor.
2. Measure from the side of the neck to the middle of the palm.
3. Find the measurement in the chart below. If the player is between two sizes, choose the smaller one.

A soft sewing tape works best. If you only have a hard tape measure or ruler, have a second person hold it along the arm.

Violin Size Chart

Grade	Typical age	Arm length	Violin size	Tall for age?
K	5–6	16″+	1/8	Arms over 18″: 1/4
1	6–7	18″+	1/4	—
2	7–8	18″+	1/4	Arms over 20″: 1/2
3	8–9	20″+	1/2	—
4	9–10	20″+	1/2	Arms over 22″: 3/4
5	10–11	22″+	3/4	—
6	11–12	22″+	3/4	Arms over 23″: 4/4
7–Adult	12+	23″+	4/4 (full size)	—

Why the Right Size Matters

On a violin that’s too large, a student has to over-extend the left arm and stretch the fingers, which leads to tension, out-of-tune notes and frustration. A properly sized violin lets young players hold the instrument comfortably, reach the notes easily and build good posture from the start. Your teacher will check the fit at the first lesson.

Renting vs. Buying

Children usually move up a size every one to two years, so most families rent fractional violins until the student reaches full size. Many rental programs let you trade up as your child grows, and some put part of the rent toward a future purchase.

Violin Size FAQ

How often will my child need a new size?

Typically every one to two years while they’re growing. Re-measure at the start of each school year, or whenever the violin starts to feel cramped.

My child is between two sizes. Which should we choose?

Always the smaller size. A violin that’s slightly small is still comfortable to play, while one that’s too big causes strain and makes good technique harder.

What size violin does an adult need?

Almost all adults play a full-size (4/4) violin. Adults with very small hands sometimes prefer a 7/8; your teacher can help you decide.

Is viola sizing the same?

No. Violas are sized by body length in inches (for example 15″ or 16″), not by fractions. If you’re starting viola, ask us and we’ll help you choose.

Thinking About Violin Lessons?

Finding the right size is the first step. We offer private violin lessons in Canton for students of all ages and levels, covering technique, reading music and repertoire tailored to each student’s goals. Meet our violin teachers, or explore viola and cello lessons.

by Henry Bahrou – Guitarist, Music Theorist, Music Academy Director