calculate height from a picture
inches. If you know the pixel width and height of an image, this section will calculate the physical size (in inches) of the image when it is printed or displayed on various devices.To use the calculator, enter the width and height, then select the output resolution which will be used.* Most monitors display images at approximately 75DPI. To check your own monitor, use the chart below. ** Many printers use a process known as Image Refinement when processing images.o use the calculator, enter the width and height, then select the output resolution which will be used. * Most monitors display images at approximately 75DPI. To check your own monitor, use the chart below. ** Many printers use a process known as Image Refinement when processing images.