Youth T-Shirt Sizes

SIZE MEASUREMENT (Taken around the chest area)
Youth Small (6-8) 30 inches
76.2 centimeters
Youth Medium (10-12) 32 inches
81.28 centimeters
Youth Large (14-16) 33 inches (but shorter than adult S)
86.36 centimeters

Adult T-Shirt Sizes

SIZE MEASUREMENT (Taken around the chest area)
Small (US)
34 (UK) or 87 (Continental, Europe & Japan)
34 or 36 inches
86.36 centimeters
Medium (US)
34 (UK) or 87 (Continental, Europe & Japan)
37 - 39 inches
93.98 centimeters
Large (US)
40 (UK) or 102 (Continental, Europe & Japan)
40 - 44 inches
106.68 centimeters
X-Large (US)
44 (UK) or 112 (Continental, Europe & Japan)
45 - 48 inches
116.84 centimeters
2XL (US)
48 (UK) or 122 (Continental, Europe & Japan)
49 - 55 inches
124.46 centimeters
3XL (US) 56 inches
142.24 centimeters
4XL (US) 60 inches
152.40 centimeters