The Home of Size Charts: Clothing, Shoes, Accessories, Interior and Sports Size Charts
The International Size Reference Guide

Youth Alpha sizes (S-M-L), Boys

Boys' Junior/Youth Clothing Size
The Youth Alpha-size System (S, M, L  - small, medium, large) is used world wide. Together with the US size system (age) and the EUR size system (height), it is the most used youth clothing size system internationally.

Youth alpha size is used from approx. 7/8 years age and up to around 15/16. Then the men's size system is next.

But what youth size is right for your kid? Let us show you...

How to Measure Boys' Youth Size

Determine boys' youth clothing size by body measurements
To determine Alpha Youth Clothing Size, you will need to take three simple body measurements:

1. Height: Body height measured when standing upright against a wall.
2. Waist Measurement: Circumference around boy's waistline (just above the navel/belly button).
3. Chest: Measure circumference aroundt fullest part of chest (under arms).

Alpha Size Chart, Inches:

Boys' General Youth Size by body measurements. All measurements in inches.
Waist Chest
XS 48-50 23.5-24 25-26
S 50-54 24-25.5 26-27
M 54-58
26-27 27-29
L 58-62 27-28.5 29-32
XL 62-67
29-30 32-35

Alpha Size Chart, CM:

Boys' General Youth Size by body measurements. All measurements in CM.
Waist Chest
XS 122-128 59-61 64-66
S 128-137 62-65 66-69
M 137-147
65-69 69-75
L 147-158 69-72 75-82
XL 158-170
73-76 82-88

Size by Age

We recommend to use body measurements to determine your youth's clothing size. But if you not are able to use these measurements, you can also determine appox. size by using the age:
XS 6-8
S 8-10
M 10-12
L 12-13
XL 13-16

Tips, Tricks or Questions?

Have you got tips, tricks or question about boys' youth clothing/boys' youth clothing sizes? Please leave a comment below. Thanks :)

Note: All our size charts are guidelines.

Sizes may vary with brands, models and manufacturers. Due to this fact, we can not guarantee that our size charts always will show the right sizes.

You are welcome to link to our size charts from your blog/website/webshop. Store owners may also refer to our size charts in their store(s). Thanks a bunch!

All content copyrighted by

MG // Martin Granum

Privacy Policy