How to Measure Your Child for Guitar
Step-by-step instructions for measuring your child for the right guitar size. Plus tips for trying guitars in store.
| Guitar Size | Age Range | Child Height | Arm Length |
|---|---|---|---|
| 1/4 Size | 4-6 years | Under 3'9" | Under 17" |
| 1/2 Size | 5-8 years | 3'9" - 4'5" | 17" - 20" |
| 3/4 Size | 8-12 years | 4'5" - 4'11" | 20" - 22" |
| Full Size | 12+ years | 5'+ | 22"+ |
Quick Answer:
The two key measurements for guitar sizing are: 1) Overall height, and 2) Arm length from neck to palm with arm extended. Combined, these determine whether your child needs 1/4, 1/2, 3/4, or full-size guitar.
How to Measure
Step 1: Measure your child's height without shoes against a wall. Step 2: Have your child extend their arm straight to the side. Measure from the base of the neck (where it meets shoulder) to the center of the palm. This arm length is the most accurate predictor.
Sizing Tips
- If between sizes, choose the smaller size for comfort
- Arm length matters more than age
- Have child sit with guitar - body should feel natural, not stretched
- Try before you buy when possible
Shop by Size
Want to learn guitar or ukulele online?
Guitar Tricks has 11,000+ lessons for all levels. Try it free for 14 days.
Frequently Asked Questions
What if my child is between sizes?
Choose the smaller size. A guitar that's too big causes bad habits, frustration, and potential injury. Kids grow fast - they'll size up soon.
How can I test guitar fit without buying?
Visit a music store and try different sizes. Your child should be able to: reach around the body comfortably, press frets without straining, and sit naturally with the guitar.
Does guitar type (acoustic vs classical) affect sizing?
No - sizes are standardized across acoustic, classical, and electric guitars. A 3/4 acoustic is the same scale length as a 3/4 classical.
Find the right Guitar size
Answer a few quick questions to get a personalized size recommendation for your child.
Take the Free QuizFree, no email required