The sizes in the US chart are based on their standard measurement that you can find here. There are thousands of suppliers of US-size t-shirts in China that can cater to your shirt business needs.
Measurements were made as shown below.
T Shirts Adult Sizes
| Size | US Sizing | Measurements (width x height) |
|---|---|---|
| Small: | 34-36 | 17 1/2 x 27 ½ in. (43 x 70 cm.) |
| Medium: | 38-40 | 20 x 30 in. (50 x 76 cm.) |
| Large: | 42-44 | 22 x 30 ½ in. (56 x 77 cm.) |
| XLarge: | 46-48 | 23 x 31 ½ in. (58 x 80 cm.) |
| XXLarge: | 50-52 | 25 x 33 in. (64 x 84 cm.) |
| 3XLarge: | 54-56 | 28 x 34 ½ in. (71 x 88 cm.) |
T Shirts Youth Sizes
| Size | US Sizing | Measurements (width x height) |
|---|---|---|
| Small: | 6-8 | 15 by 20 inches |
| Medium: | 10-12 | 17 by 23 inches |
| Large: | 14-16 | 17 1/2 by 24 inches |
Sweatshirts
| Size | US Sizing | Measurements (width x height) |
|---|---|---|
| Small: | 34-36 | 20 x 27 ½ in. (43 x 70 cm.) |
| Medium: | 38-40 | 23 ½ x 28 in. (50 x 76 cm.) |
| Large: | 42-44 | 25 x 30 ½ in. (56 x 77 cm.) |
| XLarge: | 46-48 | 26 x 30 ½ in. (58 x 80 cm.) |
| XXLarge: | 50-52 | 29 x 31 in. (64 x 84 cm.) |
| 3XLarge: | 54-56 | 30 x 31 ½ in. (71 x 88 cm.) |
Night Shirts
| Size | US Sizing | Measurements (width x height) |
|---|---|---|
| One Size: | One Size | 25 x 36 in. (64 x 91 cm.) |