Image Resolution Converter
Image resolution is how densely dots or pixels are packed along a line. Print work is specified in dots per inch — 300 DPI is the usual standard for photographic printing — while screens are described in pixels per inch. DPI and PPI are numerically identical; only the context differs.
11 units supported Base unit dot per meter (dot/m)
Dots per Inch and Pixels per Inch are the same size, so the value does not change. How this is calculated
About image resolution conversion
Image Resolution conversion is commonly needed when printing, scanning, screen specifications, and image preparation. DPI and PPI are numerically identical — only the context differs, print versus display.
Popular conversions
Convert Dot per Inch to other image resolution units
1 dpi expressed in every other image resolution unit on this site.
- Dot per Meter dot/m 39.370079
- Dot per Centimeter dot/cm 0.39370079
- Dot per Millimeter dot/mm 0.039370079
- Dot per Inch dpi 1
- Pixel per Meter px/m 39.370079
- Pixel per Centimeter px/cm 0.39370079
- Pixel per Millimeter px/mm 0.039370079
- Pixel per Inch ppi 1
- Line per Inch lpi 1
- Line per Centimeter lpcm 0.39370079
- Line per Millimeter lpmm 0.039370079
Complete list of image resolution units
All 11 units this converter supports, each stated against the dot per meter (dot/m).
| Unit | Symbol | System | In dots per meter | Conversions |
|---|---|---|---|---|
| Dot per Meter | dot/m | SI | base unit (dot/m) | — |
| Dot per Centimeter | dot/cm | Metric | 1 dot/cm = 100 dot/m | dpcm to dpi |
| Dot per Millimeter | dot/mm | Metric | 1 dot/mm = 1,000 dot/m | — |
| Dot per Inch | dpi | Imperial | 1 dpi = 39.3700787402 dot/m | dpi to dpcm |
| Pixel per Meter | px/m | SI | 1 px/m = 1 dot/m | — |
| Pixel per Centimeter | px/cm | Metric | 1 px/cm = 100 dot/m | px/cm to ppi |
| Pixel per Millimeter | px/mm | Metric | 1 px/mm = 1,000 dot/m | — |
| Pixel per Inch | ppi | Imperial | 1 ppi = 39.3700787402 dot/m | ppi to px/cm |
| Line per Inch | lpi | Imperial | 1 lpi = 39.3700787402 dot/m | — |
| Line per Centimeter | lpcm | Metric | 1 lpcm = 100 dot/m | — |
| Line per Millimeter | lpmm | Metric | 1 lpmm = 1,000 dot/m | — |
No unit in this category matches that search.
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Frequently asked questions
What is the base unit for image resolution?
Image Resolution conversions on this site are calculated against the dot per meter (dot/m).
Which image resolution units can I convert?
You can convert between 11 units, including dot per meter, dot per centimeter, dot per millimeter, dot per inch, and more.
Where is image resolution conversion useful?
It is commonly needed when printing, scanning, screen specifications, and image preparation.
Does this converter mix measurement systems?
The converter supports SI, Metric, Imperial units and keeps their exact definitions separate so results stay accurate.
Related categories
Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.