Image Resolution Converter

Convert between image resolution units including pixels per inch (PPI), dots per inch (DPI), pixels per centimeter, pixels per millimeter, and pixels per meter.

Image Resolution Converter 5 units

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Common Image Resolution Conversions

All Image Resolution Conversions

Browse all unit combinations — each page has a dedicated converter and conversion table.

Pixels/meter → Pixels/cm Pixels/meter → PPI Pixels/meter → DPI Pixels/meter → Pixels/mm Pixels/cm → Pixels/meter Pixels/cm → PPI Pixels/cm → DPI Pixels/cm → Pixels/mm PPI → Pixels/meter PPI → Pixels/cm PPI → DPI PPI → Pixels/mm DPI → Pixels/meter DPI → Pixels/cm DPI → PPI DPI → Pixels/mm Pixels/mm → Pixels/meter Pixels/mm → Pixels/cm Pixels/mm → PPI Pixels/mm → DPI

📐 How to Use

Set the From dropdown to the resolution unit you have, such as DPI, and the To dropdown to the unit you want, such as pixels per cm.
Enter the resolution figure in the value input and read the converted density in the result panel as you type.
Use the swap button to reverse the two units, then press Copy to paste the value into an image editor or layout file.
Click a card in the Common Image Resolution Conversions grid for a frequent pair, or open an All Image Resolution Conversions link for a page with a full conversion table.

❓ Frequently Asked Questions

QHow many pixels per cm is 300 DPI?

300 DPI is 118.1102 pixels per cm, found by dividing 300 by the 2.54 centimeters in an inch. A print shop asking for 300 dpi is asking for about 118 px/cm, which is the figure metric layout software expects.

QWhat is 1 PPI in pixels per cm?

1 PPI is 0.39370079 pixels per cm, and going the other way 1 pixel per cm is 2.54 PPI. The whole conversion rests on the inch being defined as exactly 2.54 cm, so no measurement error is involved.

QIs DPI the same as PPI?

Numerically they match here, both holding a factor of one, so 72 DPI converts to 72 PPI. Physically they differ: pixels are image samples, dots are marks of ink, and a printer often lays several dots per pixel to build a tone.

QDoes changing the DPI value change the pixel count?

No. Pixel dimensions and resolution are independent. A 1000-pixel-wide image stays 1000 pixels wide whether it is tagged 72 or 300 ppi; what changes is the printed width, 13.89 inches against 3.33 inches.

ℹ️ About Image Resolution Conversion

Image resolution in this sense is a sampling density: how many pixels or printed dots fall inside a unit of length. It is not the pixel dimensions of a file, which are only a count, and it means nothing until the image has a physical size. DPI and PPI are swapped freely in everyday use but describe different hardware: PPI counts pixels per inch in a bitmap or on a screen, while DPI counts the ink dots a printer puts down, often several of them per pixel. Metric print workflows ask for pixels per centimeter instead.

Five units are handled and PPI is the reference the arithmetic uses. PPI and DPI each carry a factor of one, so they convert one to one. Values below one are shown to eight decimal places and larger ones to six or four. The page does the math itself, in the browser.

📏 5 Supported Units

Pixels/meter (px/m), Pixels/cm (px/cm), PPI (ppi), DPI (dpi), Pixels/mm (px/mm).