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Digital Image Resolution Converter

Convert between digital image resolution units: pixels per inch (PPI), dots per inch (DPI), pixels per centimeter, dots per centimeter, and more.

What this tool does

Convert between digital image resolution units: pixels per inch (PPI), dots per inch (DPI), pixels per centimeter, dots per centimeter, and more. Type an amount in pixels per inch (PPI), choose the units, and the tool converts it to pixels per centimeter. It offers 6 image resolution units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one: Pixel per inch (PPI), Dot per inch (DPI), Pixel per centimeter, Dot per centimeter, Pixel per millimeter, Dot per millimeter. Starts as Pixel per inch (PPI).
  • To: Choose one of the same 6 units as "From". Starts as Pixel per centimeter.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from pixels per inch (PPI) to pixels per centimeter:

  • 1 ppi ≈ 0.393701 px/cm
  • 5 ppi ≈ 1.968504 px/cm
  • 10 ppi ≈ 3.937008 px/cm
  • 50 ppi ≈ 19.685039 px/cm
  • 100 ppi ≈ 39.370079 px/cm

Multiply the number of pixels per inch (PPI) by about 0.393701 to get pixels per centimeter. The factor follows from exact definitions. It has more digits than fit here, so it is shown rounded.

Sources: Pixel per inch (PPI): exact by definition. Pixel per centimeter: exact by definition.

Limitations

  • Converts pixel or dot density only. It does not calculate print size or pixel dimensions.

FAQs

Q: How do I convert PPI to pixels per centimeter?
A: Enter the value, choose PPI as the From unit and pixels per centimeter as the To unit. The result and the other units in the list update immediately. To go the other way, swap the two units.
Q: Is PPI the same as DPI?
A: Numerically yes: a pixel and a dot are counted the same way here. PPI describes a screen or image file and DPI describes a printer, but the conversion factors are identical.
Q: Does this change the size of my image?
A: No. It converts the unit of the density only. It does not resize an image or work out pixel dimensions.

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