One measurement, not a birthday
Violin sizing is often presented as an age chart. That's a rough starting point, but it's not reliable — children the same age can differ by two violin sizes. The correct method uses arm length, which takes 30 seconds and gives you the right answer regardless of age.
How to measure:Hold your child's left arm straight out to the side, parallel to the ground. Measure from the middle of their left palm to the left side of their neck. That number (in centimetres) maps directly to the violin size:
| Arm length | Violin size | Typical age (guide only) |
|---|---|---|
| Under 44 cm | 1/16 | 3–4 years |
| 44–47 cm | 1/10 | 3–5 years |
| 47–52 cm | 1/8 | 4–6 years |
| 52–56 cm | 1/4 | 5–7 years |
| 56–58 cm | 1/2 | 7–9 years |
| 58–60 cm | 3/4 | 9–11 years |
| 60 cm and over | 4/4 (full) | 11 and up |
Why size matters more than quality (at first)
A child playing on an instrument that's too large can't form correct left-hand technique — the arm has to overextend to reach first position, which causes tension and builds habits that are hard to unlearn later. Examiners notice this. Teachers spend lesson time correcting posture instead of teaching music.
Getting the size right at the start is the single biggest investment you can make in a beginning student's progress, ahead of brand or price.
What comes in a student violin set
A complete starter set should include: violin, bow, case, and rosin. Some sets include a shoulder rest; others don't. The Maro full violin sets are available in 1/4, 1/2, 3/4, and 4/4 and include everything needed for the first lesson. For the intermediate player who has outgrown a starter set, the Maro solid wood classic violin offers ebony fittings and a more responsive top plate without the step to professional pricing.
When to upgrade
Most children move up a size every 12–18 months in the smaller sizes, slowing down as they approach full size. The signal to upgrade: the teacher notices the child is reaching, or the arm measurement has moved clearly into the next category. There's no need to upgrade before that point.
Browse student violins and string accessories →
