What size violin does my child need?

Measure from the base of the neck to the middle of the left palm with the arm extended sideways. Roughly: 47–51 cm needs a 1/4, 51–56 cm a 1/2, 56–60 cm a 3/4, and 60 cm or more a full-size 4/4.

Do adults always play a full-size violin?

Almost always. Adults with very short arms occasionally prefer a 7/8 violin, which is slightly smaller but still tuned identically.

Is it bad to play a violin that is too big?

Yes. An oversized violin forces a raised shoulder and a collapsed left hand, which causes tension, poor intonation and sometimes injury. Size down if the fingers cannot reach comfortably.

Violin Sizes by Age and Arm Length

Violins come in eight sizes. Age is a rough guide; arm length is the real measurement. Getting this right matters more than the price of the instrument — the wrong size teaches tension that takes years to unlearn.

Size chart

1/16 — 3–5 years · arm length 35–38 cm (14–15 in)
1/10 — 4–5 years · arm length 38–43 cm (15–17 in)
1/8 — 5–6 years · arm length 43–47 cm (17–18.5 in)
1/4 — 6–7 years · arm length 47–51 cm (18.5–20 in)
1/2 — 7–9 years · arm length 51–56 cm (20–22 in)
3/4 — 9–12 years · arm length 56–60 cm (22–23.5 in)
4/4 (full) — 12+ years and adults · arm length 60 cm+ (23.5 in+)

How to measure at home

Stand up straight and extend the left arm straight out to the side, palm up.
Measure from the base of the neck (where it meets the shoulder) to the middle of the left palm.
Match that measurement to the arm-length column above.
If you land between two sizes, choose the smaller one.

A quicker in-shop test: hold the violin in playing position and curl the left hand around the scroll. If the fingers wrap the scroll comfortably with a slightly bent elbow, the size fits.

Signs the violin is too big

The left elbow is locked straight to reach the scroll
The shoulder lifts to hold the instrument up
The left wrist collapses inward against the neck
Fingers can't reach fourth finger without twisting
The player tires within a few minutes

Signs it is too small

The arm is noticeably bent and cramped
Fingers crowd each other, especially in first position
The tone sounds thin for the player's level

Sizing up as a child grows

Expect a size change roughly every one to two years between ages 5 and 12. Many shops offer rental or trade-up schemes, which is far cheaper than buying each size. Change size during a quiet period rather than just before an exam or concert, and allow two to three weeks to adjust.

What about 7/8?

A "lady's violin" — slightly smaller than full size, with the same tuning and repertoire. Useful for adults with small hands or short arms who find a 4/4 a stretch. Rare in children's sizing.

Does size change how you play?

No. Every size is tuned G–D–A–E and uses the same note patterns, so a first-position finger chart applies to all of them — the distances just shrink. Smaller instruments have a quieter, thinner tone, which is normal.

Bow sizes

The bow matches the violin: a 3/4 violin takes a 3/4 bow. A bow that is too long is hard to control at the tip and makes a good bow hold harder to build.

Got the right size? Set the instrument up correctly with the violin posture checklist, then tune it with the free tuner.

Violin sizes by age and arm length