How big is a six-inch photo?

"Six-inch photo" is a common size name in the field of photography. It does not directly mean that the length of a photo is 6 inches, but represents a common photo size, that is, 4.5 inches ×6 inches. When converted into millimeters, the unit is114 mm×152 mm.

The size of a photo can also be measured in pixels. Suppose we use the printing accuracy of 300dpi (dots per inch) to calculate, then the corresponding pixel is 1350* 1800 pixels.

Dpi stands for printing accuracy. Generally speaking, the DPI of digital photos is between 200 and 300, which can meet the general needs, while 300dpi can already reach the professional photo quality.

Pixel is the basic unit of an image. Each pixel contains color information, which together constitute the image we see. Therefore, the more pixels, the stronger the sense of detail and realism of the image.

In fact, the choice of photo size mainly depends on the specific use scene and printing requirements. Generally speaking, the commonly used photo sizes are 1 ",2", 5 "and 6", which are used for family, personal use or webpage display. If it is used in professional occasions, such as publications, advertisements or exhibitions, it may require larger photos.