Convert dot/millimetre to dot/inch

Please provide a value.
Please provide a value.

Dot/Millimetre

Dots per millimetre (dot/mm) is a unit of digital image resolution expressing the number of dots per millimetre. It is used in high-resolution printing and scanning, where 1 dot/mm equals approximately 25.4 DPI. It is common in metric countries for specifying printer and scanner resolution. 


Dot/Inch

Dots per inch (DPI) is the standard measure of spatial printing or video dot density, in particular the number of individual dots that can be placed in a line within the span of one inch. It is used to describe the resolution of printers, scanners, and displays, with common values ranging from 72 DPI for screens to over 1200 DPI for high-quality printers. 


Dot/Millimetre to Dot/Inch conversion table
Dot/MillimetreDot/InchDot/InchDot/Millimetre
125.410.0393701
250.820.0787402
376.230.11811
512750.19685
10254100.393701
20508200.787402
25635250.984252
501270501.9685
10025401003.93701
25063502509.84252
5001270050019.685
100025400100039.3701
How to convert Dot/Millimetre to Dot/Inch

1 dot/mm = 25.4 dpi. To convert any value, multiply it by 25.4. For example, 25 dot/mm = 635 dpi.

Frequently asked questions
How many dpi are there in one dot/mm?
One dot/mm is equal to 25.4 dpi.
How do you convert Dot/Millimetre to Dot/Inch?
Multiply the value in Dot/Millimetre by 25.4 to get the result in Dot/Inch.
How much is 25 dot/mm in dpi?
25 dot/mm is equal to 635 dpi.
How do you convert Dot/Inch back to Dot/Millimetre?
Divide by the same factor: multiply the value in Dot/Inch by 0.0393701 to get Dot/Millimetre.

Most common digital image resolution unit conversions