How to calculate the DPI

We are sometimes confused convert milli meters to pixels, well below the tableinformation milli meters to pixel count the rest live in their own

1 mm = 3.779527559 pxl

2 mm = 7.559055118 pxl

3 mm = 11.338582677 pxl

4 mm = 15.118110236 pxl

5 mm = 18.897637795 pxl

6 mm = 22.677165354 pxl

7 mm = 26.456692913 pxl

8 mm = 30.236220472 pxl

9 mm = 34.015748031 pxl

10 mm = 37.795275591 pxl

To calculate the DPI (dots per inch) follows the formula

DPI = (PXL / D) x25.4

information

DPI = dots per inch

PXL = pixel

MM = the size of the image can be wide or long

Example: we scan a card with a size of 150 x 100 mm with the results of 400 pixels. so to width DPI is DPI = (400/150) x 4.25 = 67.73