4x6

4x6 refers to a rectangular dimension, most commonly used to describe a standard photographic print size of 4 inches by 6 inches. In metric terms, this is 101.6 mm by 152.4 mm, and the area is about 154.9 square centimeters. The aspect ratio of 4x6 is 2:3, a common proportion in 35mm and many digital cameras.

In practical use, 4x6 is a widely available print size offered by photo labs and consumer printers. It is popular for snapshots, albums, and gift prints due to its balance between detail and manageability. Frames and mats designed for 4x6 images are widely sold, and the size is often used for passport-style display in certain contexts, though specific passport dimensions vary by country.

For digital imaging, printing a 4x6 at 300 dots per inch requires a resolution of about 1200 by 1800 pixels. At lower resolutions, such as 72 or 150 dpi, the image may appear less sharp when printed at true 4x6 dimensions. Photographers may crop images to preserve the 2:3 aspect ratio or adjust composition to fit standard print sizes.

Related sizes include 3x5 and 5x7 inches, which share similar uses but have different aspect ratios. The 4x6 format remains one of the most common and convenient photo print sizes in consumer and professional workflows.