Dot per inch (dpi)
Number of printed dots per inch (25.4 mm). The usual unit for printers and scanners.
What is a dot per inch?
- Symbol
- dpi
- Quantity
- Digital Image Resolution
- Unit system
- US customary
- Definition
- Number of printed dots per inch (25.4 mm). The usual unit for printers and scanners.
- Exact
- Yes, the value is exact by definition
- Source
- International yard and pound agreement (1959)
Common applications
The usual resolution figure for printers, scanners and print-ready images, and also for computer mouse sensitivity.
Dot per inch in other digital image resolution units
- 1 dpi ≈ 39.37007874 dot/mDot per meter
- 1 dpi ≈ 0.3937007874 dot/cmDot per inch to Dot per centimeter converter
- 1 dpi ≈ 0.03937007874 dot/mmDot per inch to Dot per millimeter converter
- 1 dpi = 1 ppiPixel per inch
- 1 dpi ≈ 0.3937007874 px/cmPixel per centimeter
Dot per inch quick reference
| Dot per inch | Dot per centimeter | Dot per millimeter | Dot per meter |
|---|---|---|---|
| 1 dpi | ≈ 0.3937007874 dot/cm | ≈ 0.03937007874 dot/mm | ≈ 39.37007874 dot/m |
| 10 dpi | ≈ 3.937007874 dot/cm | ≈ 0.3937007874 dot/mm | ≈ 393.7007874 dot/m |
| 100 dpi | ≈ 39.37007874 dot/cm | ≈ 3.937007874 dot/mm | ≈ 3937.007874 dot/m |
| 1000 dpi | ≈ 393.7007874 dot/cm | ≈ 39.37007874 dot/mm | ≈ 39370.07874 dot/m |
Where the dot per inch fits
The next smaller digital image resolution unit is the dot per meter (dot/m). 1 dpi ≈ 39.37007874 dot/m, and 1 dot/m = 0.0254 dpi.
The next larger digital image resolution unit is the dot per centimeter (dot/cm). 1 dpi ≈ 0.3937007874 dot/cm, and 1 dot/cm = 2.54 dpi.
Frequently asked questions
- How many dots per centimeter are in one dot per inch?
- One dot per inch ≈ 0.3937007874 dot/cm (dots per centimeter).
- How many dots per millimeter are in one dot per inch?
- One dot per inch ≈ 0.03937007874 dot/mm (dots per millimeter).
- How many dots per meter are in one dot per inch?
- One dot per inch ≈ 39.37007874 dot/m (dots per meter).