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How To Determine the Proper Instrument Size
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How To Determine the Proper Instrument Size
Violin and Viola
With the student’s left arm fully extended and palm up, place a measuring device under the chin to simulate a violin - note the measurement at the center of the palm.
Measurement Instrument Size Measurement Instrument Size
Less than 14 1/4" 1/32 size 21 3/4" to 23” 3/4 size (13” viola)
14 1/2" to 15 1/2" 1/16 size 23 1/4" and over 4/4 size (14” viola)
15 3/4" to 16 1/2" 1/10 size 24 7/8" - 25 5/8" 15" viola
16 3/4" to 18 1/2" 1/8 size 25 7/8" - 26 3/8" 15 1/2" viola
18 3/4" to 20” 1/4 size 26 3/8" 27 1/8" 16" viola
20 1/4" to 21 1/2" 1/2 size (12” viola) Over 27 1/4" 16" or larger
If you have access to an instrument, ask the student to hold the instrument as if they are playing. The student should be able to cup the majority of the fingers around to the top of the scroll.

Always choose the smaller size if the student is in-between sizes, because a larger instrument will hinder the student’s ability to play properly.

Classical Guitar
Sizing Chart for Classical Guitars
4/4 Size 7/8 Size 3/4 Size 1/2 Size 1/4 Size
Age 11+ Age 11+ Age 8-11 Age 6-8 Age 4-6
5' or taller 5' or taller
(smaller size/hands)
4' 6" - 4' 11" 3' 10" - 4' 5" 3' 3" - 3' 9"