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The International Size Reference Guide

Boys' T-Shirt Size Chart (Youth)

Determine Boys' T-shirt size
There are lots of cool t-shirts out there, just waiting to be put on. But make sure that your boy is wearing the right t-shirt size....

How to Determine Boys' T-Shirt Size?

Boys' t-shirt size can be determined in three different ways, by either body measurements (chest and waist measurement), body height or by garment-specific measurements (t-shirt measurements). Let's go:

T-Shirt Size by Garment Measurements

T-shirt Measurements:

Length: T-shirt length in front, top to bottom.
Chest Width: T-shirt width edge-to-egde (not circumference) over fullest part of chest.

Use measurements to determine boys' t-shirt size with the t-shirt size chart below.

boys' t-shirt size, measurements
Boys' T-shirt size chart, Inches:
Size Length Chest
Youth XS 18'' 15''
Youth S 19'' 15.5''
Youth M 21'' 16''
Youth L 23'' 18''
Youth XL 25'' 19''

Note: Sleeve length is not included, because it varies a lot with different t-shirt styles.


T-shirt size chart, CM:
Size Length Chest
Youth XS 46 cm 38 cm
Youth S 48 cm 39.5 cm
Youth M 53 cm 41 cm
Youth L 58 cm 46 cm
Youth XL 63 cm 48 cm

Note: Sleeve length is not included, because it varies a lot with different t-shirt styles.

T-Shirt Size Chart by Body Measurements

Boy's t-shirt size from body measurements
To determine t-shirt size from body measurements, you need to measure:
Bust: circumference around bust at the fullest part - use a soft, flexible measuring tape.
Waist: circumference around your natural waistline, just above the navel (narrowest/slimmest part of waist/torso)

Use measuremens to determine your UK t-shirt size with the t-shirt size charts below:


T-shirt Size Chart by Body Measurement, Inches:

Size
Age
Waist
Chest
XS 6-8 23-24'' 25-26''
S 8-10 24-25'' 26-27''
M 10-12 25-27'' 27-29''
L 12-13 27-29'' 29-32
XL 13-15 29-30'' 32-35


T-shirt Size Chart by Body Measurement, CM:

Size
Age
Waist
Chest
XS 6-8 60-62 64-66
S 8-10 62-65 66-69
M 10-12 65-69 69-75
L 12-13 69-73 75-81
XL 13-15 73-76 82-89

If your measurements fall between two sizes, we recommend to select the larger size (but you may try both sizes on if possible). Need larger sizes? See Men's t-shirt size chart!


T-Shirt Size Chart by Height



T-shirt Size Chart by Body Measurement, Inches:

Size
Age
Body Height
XS 6-8 48-50'' (122-128 cm)
S 8-10 50-54'' (128-137 cm)
M 10-12 54-58'' (137-147 cm)
L 12-13 58-62'' (147-158 cm)
XL 13-15 62-68'' (158-172 cm)


Tips, Tricks or Questions about Boys' T-shirt Sizes?

Have you got tips or tricks about Boys' t-shirt sizing? Or maybe a questions? Please post it here. 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!

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MG // Martin Granum