What Size Guitar for a Child? Guitar Size Chart by Age and Height
A parent's guide to choosing the right guitar size for kids aged 4 to 14, with a size chart, a two-minute fit test you can do at home, and nylon vs steel vs electric explained.
Quick answer
As a starting point: a 1/4 size guitar (about 30 inches long) suits most children aged 4 to 6, a 1/2 size (about 34 inches) suits ages 6 to 8, a 3/4 size (about 36 inches) suits ages 8 to 11, a 7/8 or small-body guitar suits ages 11 to 13, and a full-size guitar (38 to 41 inches) suits most children from about 12 or once they are around 150 cm tall. Height and arm length matter more than age, so confirm the fit: seated with the guitar on the leg, your child should reach the first fret with a slightly bent elbow and rest the strumming arm comfortably over the body. Never buy a guitar to grow into; a guitar that is too big is one of the most common reasons young beginners give up.
Why the right guitar size matters so much for kids
A guitar that is too big forces a child to stretch the fretting arm straight, twist the wrist, and lean over the body just to see the strings. Chords become physically impossible rather than just difficult, and a child who cannot make a chord sound in the first few weeks quickly decides they are not musical.
The right size does the opposite. Fingers reach the frets with a natural curve, the strumming arm rests over the body without lifting the shoulder, and early wins come fast. Size is one of the few decisions parents make that directly changes how quickly a child progresses.
- Too big: straight locked elbow, shoulder lifted, child leaning over to see the strings
- Too big: guitar slides off the leg or the child cannot reach around the body to strum
- Too small: elbows cramped, fingers crowded at higher frets, guitar looks tiny against the body
- Right size: slight bend in the fretting elbow, relaxed shoulders, both feet on the floor or a footstool
Guitar size chart by age and height
Use this chart to shortlist a size, then confirm it with the fit test below. Sizes are labelled differently by different brands and total lengths vary by a few centimetres, so treat these as ranges rather than exact cut-offs.
When a child sits between two sizes, choose the smaller one. They can move up sooner, and in the meantime they will actually be able to play.
| Guitar size | Total length (approx.) | Typical age | Child's height (approx.) |
|---|---|---|---|
| 1/4 size | 76-79 cm (30-31 in) | 4-6 years | 100-120 cm (3'3"-3'11") |
| 1/2 size | 84-86 cm (33-34 in) | 6-8 years | 120-135 cm (3'11"-4'5") |
| 3/4 size | 89-92 cm (35-36 in) | 8-11 years | 135-150 cm (4'5"-4'11") |
| 7/8 size or small body | 94-99 cm (37-39 in) | 11-13 years | 150-160 cm (4'11"-5'3") |
| Full size (4/4) | 97-104 cm (38-41 in) | 12+ years and adults | 150 cm (4'11") and above |
The two-minute fit test you can do at home or in the shop
Age charts are a shortlist, not a decision. Arm length, hand size, and posture vary a lot between children of the same age, so always check the fit with your child holding the guitar in playing position.
If you are buying online, do the test with a friend's guitar or a shop display model of the same size, or ask your child's guitar teacher to check the fit over video during a lesson.
- Seat your child on a chair low enough that both feet rest flat on the floor, or use a footstool
- Rest the guitar on the right leg (left leg for left-handed players) with the body upright and the neck slightly raised
- Ask them to reach the first fret near the headstock: the elbow should stay slightly bent, not locked straight
- Check the strumming arm drapes over the top of the body with the forearm crossing the strings near the soundhole, without the shoulder lifting
- Make sure they can see the fretboard by tilting the head, without leaning the whole body over the guitar
- Ask them to press one string at fret 3 with the index finger: they should be able to curve the finger and press with the fingertip
Nylon, steel, or electric: which type is best for kids?
Size is only half the decision. String type changes how much playing hurts in the first weeks, how wide the neck is, and what music the guitar suits. For most children under about 9 or 10, a nylon-string guitar is the gentlest start.
Older children who are motivated by pop, rock, or film songs often practise more on the type of guitar they hear in their favourite music, and that motivation is worth more than a theoretical advantage in comfort.
| Type | Feel for small fingers | Best for | Things to know |
|---|---|---|---|
| Nylon-string (classical) | Softest strings, least fingertip pain | Ages 4-10, classical and exam syllabi, first instrument | Neck is wider, so choose a properly scaled fractional size |
| Steel-string acoustic | Firmer strings, sore fingertips for 2-3 weeks | Ages 9+, pop, folk, and Bollywood strumming | Needs a good setup with low string height to be playable |
| Electric (short scale) | Light strings and a slim neck, very easy to press | Ages 9+ who love rock or pop | Needs an amplifier or headphone amp; heavier body |
Mistakes parents make when buying a first guitar
Most first-guitar problems come from good intentions: saving money long-term, or buying something that looks like a real instrument. These are the mistakes teachers see most often in trial classes.
- Buying a bigger guitar for the child to grow into, which makes the first year much harder
- Buying a toy guitar that will not stay in tune, so even correct playing sounds wrong
- Ignoring string height (action): high strings are painful to press, and a shop setup usually fixes this cheaply
- Choosing a steel-string guitar for a very young child who then avoids practice because it hurts
- Skipping a tuner: a free tuning app or clip-on tuner is essential from day one
- Not checking the guitar is right- or left-handed for your child
When to move up to the next size
Children usually change guitar size every two to three years while they are growing. Re-run the fit test every six months or so, and move up when the signs below appear consistently rather than after one growth spurt.
A teacher who sees your child weekly will usually notice first, because posture changes on a small guitar are easy to spot in lessons.
- The fretting elbow is bent sharply and pressed back against the body
- Fingers feel crowded when playing chords around frets 5 to 7
- The guitar body looks small against the torso and sits high on the leg
- Your child is reaching across the body easily and wants a fuller sound
Frequently Asked Questions
What size guitar does a 7-year-old need?
Most 7-year-olds fit a 1/2 size guitar, around 84 to 86 cm long. A tall 7-year-old, around 135 cm or more, may be comfortable on a 3/4 size. Always confirm with the fit test before buying.
What size guitar is right for a 10-year-old?
A 3/4 size guitar suits most 10-year-olds. Taller children close to 150 cm can try a 7/8 or small-body guitar, but if in doubt choose the 3/4, which is easier to play.
Can a 12-year-old play a full-size guitar?
Often, yes. Many 12-year-olds around 150 cm or taller can play a full-size guitar, especially a smaller-bodied or classical model. Shorter 12-year-olds are usually better on a 7/8 size for another year or two.
Is it better to buy a bigger guitar so my child can grow into it?
No. An oversized guitar makes chords physically harder and is one of the most common reasons children quit in the first few months. Buy the size that fits now and move up later.
Should a child start on a nylon or steel-string guitar?
Nylon strings are gentler on young fingertips, so they are the usual choice for children under about 9 or 10. Older children who want to play pop or film songs often do well on a well set-up steel-string or a short-scale electric guitar.
What age can a child start learning guitar?
Many children can start around 5 or 6 on a 1/4 or 1/2 size guitar with short, playful lessons. Most children find it easier from about 7, when finger strength and attention span make chords more achievable.
Can adults play a 3/4 size guitar?
Yes. Smaller adults, people with small hands, and travellers often use 3/4 or small-body guitars. The trade-off is a slightly quieter sound and less bass.
Is a ukulele a good first step before guitar?
It can be for very young children. The ukulele's four strings are tuned like the top four strings of a guitar with a capo at the fifth fret, so chord shapes transfer, although the chord names change when your child moves to guitar.
Not sure if your child's guitar fits?
Book a free trial guitar class for your child and our teacher will check the guitar size, posture, and setup over video, then build a fun first-month plan around their age.
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