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Digital Image Resolution Converter
Result
... Dot per millimeter = ... Dot per inch
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Dot per millimeter to Dot per inch Converter
Use this page to convert dot per millimeter values into dot per inch, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 dot/mm = 25.4 dot/in
1 dot/in = 0.0393700787401575 dot/mm
Example: 300 dot/mm = 7,620 dot/in
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Dot per millimeter
One dot per millimeter is equal to 1000 dots per meter.
History: Millimeter-based resolution units are practical for compact imaging and print measurements.
Current use: Used for scanning, microscopy, print production, and compact-device resolution references.
Also written as dot/mm, dots per millimeter, dots per millimetre.
Dot per inch
One dot per inch is equal to 1 / 0.0254 dots per meter.
History: Dots per inch became a standard way to describe printer and scanner density.
Current use: Used for printers, scanners, raster images, publishing, and production artwork.
Also written as dot/in, dpi, dots per inch.
Dot per millimeter to Dot per inch table
| Dot per millimeter [dot/mm] | Dot per inch [dot/in] |
|---|---|
| 0.01 dot/mm | 0.254 dot/in |
| 0.1 dot/mm | 2.54 dot/in |
| 1 dot/mm | 25.4 dot/in |
| 2 dot/mm | 50.8 dot/in |
| 5 dot/mm | 127 dot/in |
| 10 dot/mm | 254 dot/in |
| 20 dot/mm | 508 dot/in |
| 50 dot/mm | 1,270 dot/in |
| 100 dot/mm | 2,540 dot/in |
Frequently asked questions
How many Dot per inch (dot/in) are in one Dot per millimeter (dot/mm)?
One Dot per millimeter equals 25.4 Dot per inch.
How do you convert Dot per millimeter to Dot per inch?
Multiply the Dot per millimeter value by 25.4 to get the result in Dot per inch.
How do you convert Dot per inch back to Dot per millimeter?
Multiply the Dot per inch value by 0.0393700787401575 to get back to Dot per millimeter.
What is 300 Dot per millimeter in Dot per inch?
300 Dot per millimeter equals 7,620 Dot per inch.