Kids Shirt Size Chart: Chest, Height, Age, Youth & Toddler Tops

Kids shirt size chart for toddler, little kid and youth tops using chest, height, garment length and age.

Kids shirt size chart

Use chest and height for T-shirts, polos, button-downs and school tops.

Size	Chest	Garment length guide	Height	Fit note
2T	20-21 in / 51-53 cm	13-14 in / 33-36 cm	33-35 in / 84-89 cm	Toddler cut with diaper-friendly body length
3T	21-22 in / 53-56 cm	14-15 in / 36-38 cm	35-38 in / 89-97 cm	Toddler proportion
4 / 4T	22-23 in / 56-58 cm	15-16 in / 38-41 cm	38-41 in / 97-104 cm	Size 4 may be slimmer than 4T
5-6	23-25 in / 58-64 cm	16-18 in / 41-46 cm	41-48 in / 104-122 cm	Little kid range
7-8	25-27 in / 64-69 cm	18-20 in / 46-51 cm	48-53 in / 122-135 cm	Check sleeve for long arms
10-12	28-31 in / 71-79 cm	20-23 in / 51-58 cm	53-60 in / 135-152 cm	Youth medium range
14-16	32-35 in / 81-89 cm	23-26 in / 58-66 cm	60-67 in / 152-170 cm	Youth large to adult XS/S crossover

For uniforms and button-down shirts, allow enough chest room so the shirt does not pull when sitting or reaching.

Youth alpha labels bridge little kid sizes and adult XS/S sizing.

Youth label	Approx age	Weight	Height	Chest	Waist
YXS / 4-5	4-5 years	39-49 lb / 18-22 kg	40-45 in / 102-114 cm	22-24 in / 56-61 cm	21-22 in / 53-56 cm
YS / 6-7	6-7 years	49-58 lb / 22-26 kg	45-50 in / 114-127 cm	24-26 in / 61-66 cm	22-23 in / 56-58 cm
YM / 8-10	8-10 years	58-80 lb / 26-36 kg	50-56 in / 127-142 cm	26-29 in / 66-74 cm	23-25 in / 58-64 cm
YL / 12-14	11-13 years	80-115 lb / 36-52 kg	56-64 in / 142-163 cm	29-33 in / 74-84 cm	25-27 in / 64-69 cm
YXL / 16-18	13+ years	115-140 lb / 52-64 kg	64-69 in / 163-175 cm	33-36 in / 84-91 cm	27-30 in / 69-76 cm

Teens may need adult sizes for height or length before chest and waist measurements fully match adult charts.

Measure height with the child standing straight against a wall and shoes off.

Use weight as a secondary check because children with the same age can have very different builds.

For tops and jackets, check chest and sleeve; for bottoms, check waist, hips and inseam.

If a child is between sizes, size up for growth room unless the garment is safety-sensitive or must fit closely.

Compare all kids apparel sizes.

Review general T-shirt sizing.

Fit polos and button-down uniform shirts.

How do I size a kids shirt?

Measure chest and height, then compare garment length if the child is tall or long-torsoed.

What is youth large in shirts?

Youth large often fits around ages 11-13, about 56-64 inches tall with a 29-33 inch chest.

Should school shirts be roomy?

They should allow movement and sitting, but not be so oversized that they look sloppy or unsafe.