Inch is the unit of length measurement in China, and centimeter is the international unit of length measurement. Because 1 inch = 3.33 cm, 7 inches is about 23.3 cm. In addition, 1 inch = 2.54 cm, and 7 inches is about 17.8 cm.

If it is a seven-inch photo, the standard size is 17.8cm* 12.7cm, 7*5 inches, which is about the size of half a piece of A4 paper. Its pixel is 2 100* 1500, which is generally used for life photos and art photos.

Conversion of length units:

1 inch (inch) = 2.54cm.

1 inch (inch) = 0.0254m.

1 inch (inch) = 0.762 city inch.

1 cm = 0.35438+057477 inches (inches).

1 inch = 1.3 12336 inch (inch)

1 m = 39.35438+057 inches (inches). 36638.68666866667