Image Size And Resolution

These images above of a duck are 2 inches in size but their resolution in pixels per inch have been decreased. The lower the PPI, the less pixels make up the image, therefore making it look less clear and crisp.

An image of the Suffragettes is relative to my political multipage document as my target audience will be young females. The screen size of the image is 620x591 pixels.

Physical screen size in inches

620/72=8.6 inches

591/72= 8.2 inches

Physical print size in inches

20/300= 2.07 inches

591/300= 1.97 inches

Physical print size in centimetres

2.07*2.54=5.26cm

1.97*1272.54=5.00cm

Physical print size in millimetres

5.26*10=52.6mm

5.00*10=50mm

Now I know how to convert an image from it's screen size to it's print size, I need to know how to convert an image from it's print publication size to it's physical screen size and to do this, you must do the process above in reverse.

This is picture of Andrew Garfield as Spider Man from Empire magazine.

Physical print size in millimetres 

127x157mm

Physical print size in centimetres

127/10=12.7cm

157/10=15.7cm

Physical print size in inches 

12.7/2.54=5.00 inches

15.7/2.54=6.18 inches

Pixel dimensions in inches

5.00*300=1500 inches

6.18*300=1854 inches

Physical screen size in inches

1500*72=108,000 inches

1854*72=133,488 inches