Found Web Picture - how big will it print?

This picture is 480 pixels wide x 640 pixels high. It is also saved as a 72 pixel/inch picture. (If you are skeptical, you can copy it to your desktop and open it in Photoshop to check for yourself.)

How big will it print?

Solution

We know the number of pixels (both height and width), and the picture's resolution. Calculate the print size by dividing the number of pixels on each dimension by the resolution.

Height = 640 pixels / 72 pixels/inch = 8.89 inches

Width = 480 pixels / 72 pixels/inch = 6.67 inches

Note that this does not determine print quality, only that the print will be 8.89 x 6.67 inches in size. In reality, 72 pixels/inch is a very low resolution when printing, so expect a fuzzy, somewhat pixilated picture when printed. But it will be 8.89 inches x 6.67 inches as calculated.