Pixel to Centimeter?

Question

I just want to know if the pixel unit is something that doesn\'t change, and if we can convert from pixels to let\'s say centimeters ?

Answer 1

Converting pixels to centimeters depends on the DPI (dots per inch) of the media displaying the image, i.e. monitor, laser printer, etc.

http://wiki.answers.com/Q/How_do_you_convert_pixels_into_centimeters