3by2

3by2 is a term that can refer to several related concepts tied to the numbers 3 and 2. It is commonly written as 3x2 or 3:2 and can denote a ratio, a rectangle's dimensions, or a brand or project name used by unrelated entities.

In geometry, a 3 by 2 rectangle is a rectangle with width 3 units and height 2 units (or vice versa). The area equals 6 square units; if used as a matrix dimension, it is a 3-by-2 matrix with three rows and two columns.

In imaging, the 3:2 aspect ratio is widely used in photography and digital imaging. It originates from the 35mm format's proportions and is common in DSLR and mirrorless cameras. When an image is captured in 3:2, printing and display alignments accommodate the width:height ratio accordingly; it contrasts with 4:3 and 16:9.

People may refer to 3 by 2 inches (3x2 in) as a small card or label size. Similarly, 3 by 2 units can define regions in design or layout.

Several companies and projects have used "3by2" as a brand name or product designation. As a generic term, it does not denote a single company or standard.