Digital Image Resolution conversion
1 dot/millimeter (dot/mm) equals 25.400000000102 dot/inch (dpi) (dpi). Enter any value below to convert from dot/mm to dpi.
Enter a value and choose units. Results update instantly.
1 dot/mm = 25.4000000001 dpi
| Unit | Value |
|---|---|
| Dot/meter dot/m | 1,000 |
| Dot/centimeter dot/cm | 10 |
| Dot/millimeter dot/mm | 1 |
| Dot/inch (dpi) dpi | 25.4000000001 |
| Pixel/meter pixel/m | 1,000 |
| Pixel/centimeter pixel/cm | 10 |
| Pixel/inch (ppi) ppi | 25.4000000001 |
Formula
Use this relationship for a direct conversion:
2 dot/mm = 50.8000000002 dpi.
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
Quick reference
| Dot/millimeter (dot/mm) | Dot/inch (dpi) (dpi) |
|---|---|
| 0.01 | 0.254 |
| 0.1 | 2.54 |
| 1 | 25.4000000001 |
| 2 | 50.8000000002 |
| 5 | 127.0000000005 |
| 10 | 254.000000001 |
| 25 | 635.0000000025 |
| 50 | 1,270.0000000051 |
| 100 | 2,540.0000000102 |
| 1,000 | 25,400.0000001016 |
From unit
Dot/millimeter (dot/mm) is a unit of Digital Image Resolution. 1 dot/mm = 1,000 dot/m
Symbol: dot/mm
To unit
Dot/inch (dpi) (dpi) is a unit of Digital Image Resolution. 1 dpi = 39.37007874 dot/m
Symbol: dpi
Keep converting
Source
The SI framework is checked against NIST Guide for the Use of the International System of Units; conventional factors come from the extended factor inventory. Calculations use full internal precision before display rounding.
View the complete digital image resolution converterQuestions
Use the formula dpi = dot/mm x 25.400000000102. 1 dot/millimeter (dot/mm) equals 25.400000000102 dot/inch (dpi) (dpi).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
