Pixels is the smallest element on the screen of the picture. Each pixel is the sample of the original picture. More number of samples provide more accurate image. The dots per inch is the measure used in printing. The monitors don't have dots, they have pixel and can be calculated using the pixel to cm converter. There are different types of pixels like bits, subpixel and megapixel. Select pixel, dpi or centimeter in the image size calculator and enter the values to find the resultant of the selected value.
The dpi refers to the output resolution of the image and pixel refers to the input resolution of the image. Find the pixel, centimeter and dots per inch using the image size calculator.