As we know One dot/m is equal to 0.001 pixel/mm (1 dot/m = 0.001 pixel/mm).

To convert Dot/Meter to Pixel/Millimeter, multiply your dot/m figure by 0.001.

Example : convert 25 dot/m to pixel/mm:

25 dot/m = 25 × 0.001 pixel/mm = pixel/mm

To convert Pixel/Millimeter to Dot/Meter, divide your pixel/mm figure by 0.001.

Example : convert 25 pixel/mm to dot/m:

25 pixel/mm = 25 ÷ 0.001 dot/m = dot/m