Digital Image Resolution conversion
1 dot/inch (dpi) (dpi) equals 0.03937007874 dot/millimeter (dot/mm). Enter any value below to convert from dpi to dot/mm.
Enter a value and choose units. Results update instantly.
1 dpi = 0.0393700787 dot/mm
| Unit | Value |
|---|---|
| Dot/meter dot/m | 39.37007874 |
| Dot/centimeter dot/cm | 0.3937007874 |
| Dot/millimeter dot/mm | 0.0393700787 |
| Dot/inch (dpi) dpi | 1 |
| Pixel/meter pixel/m | 39.37007874 |
| Pixel/centimeter pixel/cm | 0.3937007874 |
| Pixel/inch (ppi) ppi | 1 |
Formula
Use this relationship for a direct conversion:
2 dpi = 0.0787401575 dot/mm.
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/inch (dpi) (dpi) | Dot/millimeter (dot/mm) |
|---|---|
| 0.01 | 0.0003937008 |
| 0.1 | 0.0039370079 |
| 1 | 0.0393700787 |
| 2 | 0.0787401575 |
| 5 | 0.1968503937 |
| 10 | 0.3937007874 |
| 25 | 0.9842519685 |
| 50 | 1.968503937 |
| 100 | 3.937007874 |
| 1,000 | 39.37007874 |
From unit
Dot/inch (dpi) (dpi) is a unit of Digital Image Resolution. 1 dpi = 39.37007874 dot/m
Symbol: dpi
To unit
Dot/millimeter (dot/mm) is a unit of Digital Image Resolution. 1 dot/mm = 1,000 dot/m
Symbol: dot/mm
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 dot/mm = dpi x 0.03937007874. 1 dot/inch (dpi) (dpi) equals 0.03937007874 dot/millimeter (dot/mm).
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.
