PX To CM

The PX to CM calculator converts pixel measurements to centimeter values using DPI (Dots Per Inch) as the conversion bridge. The calculator applies the formula cm = px × 2.54 ÷ DPI in real time, where 2.54 is the fixed number of centimeters in one inch (1 in = 2.54 cm).

The PX to CM conversion calculator works in 3 steps:

1. Enter a pixel (px) value in the input field — any positive number including decimals, such as 100 px, 1920 px, or 37.5 px.
2. Select the DPI (Dots Per Inch) setting that matches the target context. The calculator supports 4 standard presets: 72 DPI (Mac Classic / legacy web), 96 DPI (Windows Standard / CSS reference pixel), 150 DPI (medium resolution print), and 300 DPI (high quality print). A custom DPI option is available for specific screen or print resolutions.
3. Read the centimeter (cm) result along with the step-by-step formula breakdown and equivalent values in 4 related units: millimeters (mm), inches (in), typographic points (pt), and CSS rem.

The calculator also works in reverse — enter a centimeter value and the pixel equivalent updates using the inverse formula px = cm × DPI ÷ 2.54. Web designers, graphic designers, and front-end developers use the PX to CM calculator when preparing digital assets for print design, setting document dimensions in Adobe Photoshop or Figma, or converting CSS pixel values to physical centimeter measurements.

The PX to CM formula is cm = px × 2.54 ÷ DPI. The constant 2.54 represents the exact number of centimeters in one inch (1 in = 2.54 cm), and DPI (Dots Per Inch) defines how many pixels fit within that inch.

Here are 2 worked examples of the PX to CM conversion formula:

Example 1 — 100 px at 96 DPI: cm = 100 × 2.54 ÷ 96 = 254 ÷ 96 = 2.6458 cm. At 96 DPI (the W3C CSS reference pixel standard), 100 pixels equal 2.6458 centimeters (26.458 mm or 1.0417 inches).

Example 2 — 300 px at 300 DPI: cm = 300 × 2.54 ÷ 300 = 762 ÷ 300 = 2.54 cm. At 300 DPI (high quality print resolution), 300 pixels equal exactly 2.54 centimeters (1 inch), because 300 pixels divided by 300 DPI is exactly 1 inch.

The DPI value changes the conversion result. Higher DPI values produce smaller centimeter outputs per pixel because more pixels are packed into each inch. At 72 DPI, 1 px = 0.0353 cm (0.353 mm). At 96 DPI, 1 px = 0.0265 cm (0.265 mm). At 300 DPI, 1 px = 0.0085 cm (0.085 mm).

PX to CM is a unit conversion from pixels (px) to centimeters (cm) that uses DPI (Dots Per Inch) to bridge digital screen units and physical measurement units. The conversion formula is cm = px × 2.54 ÷ DPI, where 2.54 cm equals 1 inch.

A pixel (px) is the smallest addressable element on a digital display. The W3C (World Wide Web Consortium) CSS specification defines 1 CSS pixel as 1/96th of an inch at the standard 96 DPI reference. A centimeter (cm) is a metric unit of physical length equal to 1/100 of a meter (10 mm). Pixels are used in web design, responsive design, and digital image editing. Centimeters are used in print design, manufacturing, and physical measurement.

The PX to CM conversion depends on pixel density — the number of pixels packed into each inch of a display or print output. At 96 DPI (the CSS reference standard), 1 px equals 0.0265 cm (0.265 mm). At 72 DPI (legacy Mac displays), 1 px equals 0.0353 cm (0.353 mm). At 300 DPI (high quality print), 1 px equals 0.0085 cm (0.085 mm). The DPI value determines the physical size of each pixel.

Web designers use PX to CM conversion when exporting designs from tools such as Figma, Adobe Photoshop, Sketch, or GIMP for print production. Front-end developers use PX to CM conversion when CSS pixel dimensions need to match physical centimeter specifications in print stylesheets or PDF outputs.

37.7953 px equals 1 cm at 96 DPI (Dots Per Inch). The number of pixels in 1 centimeter changes based on the DPI setting, because DPI defines how many pixels fit into each inch (1 inch = 2.54 cm).

Here are the pixel values for 1 cm at 4 standard DPI settings:

At 96 DPI, 1 cm contains 37.7953 pixels because 96 ÷ 2.54 = 37.7953. At 300 DPI, 1 cm contains 118.1102 pixels because 300 ÷ 2.54 = 118.1102. Higher DPI values pack more pixels into each centimeter, resulting in finer detail and sharper image resolution for print design and digital imaging.

1 px equals 1/96th of an inch (0.0104 inches or 0.0265 cm) at the standard 96 DPI (Dots Per Inch). The pixel-to-inch relationship depends on DPI, because DPI defines how many pixels are packed into a single inch of display or print surface.

Here are the inch values for 1 px at 4 standard DPI settings:

The W3C CSS specification defines 1 CSS pixel as exactly 1/96th of 1 inch. This means 96 px = 1 inch = 2.54 cm at the 96 DPI reference. At 72 DPI (used by Mac Classic displays and legacy Adobe Photoshop), 72 px = 1 inch. At 300 DPI (used in high quality print design), 300 px = 1 inch. The conversion between px, inches, and cm follows the fixed constant: 1 inch = 2.54 cm = DPI pixels.

To convert px to inches, use the formula inches = px ÷ DPI. To convert inches to cm, multiply by 2.54. To convert px to cm directly, use cm = px × 2.54 ÷ DPI.

Open Image → Image Size (Alt+Ctrl+I on Windows, Option+Cmd+I on Mac) in Adobe Photoshop, change the unit dropdown from "Pixels" to "Centimeters," and set the resolution to the target DPI (Dots Per Inch) value.

To change px to cm in Adobe Photoshop, follow these 4 steps:

1. Open Image Size: Go to Image → Image Size or press Alt+Ctrl+I (Windows) / Option+Cmd+I (Mac). The Image Size dialog box displays the current document dimensions in pixels.
2. Change the unit dropdown: Click the unit dropdown next to Width or Height and select "Centimeters" instead of "Pixels." Adobe Photoshop recalculates the dimensions based on the current resolution (PPI) setting.
3. Set the resolution: Enter the target resolution in the Resolution field. Use 72 PPI (Pixels Per Inch) for web/screen, 150 PPI for medium print, or 300 PPI for high quality print. Adobe Photoshop defaults to 72 PPI for new documents.
4. Apply the changes: Click OK to apply. The document now displays dimensions in centimeters. Adobe Photoshop uses PPI (Pixels Per Inch), which is equivalent to DPI (Dots Per Inch) for the px to cm conversion.

Click "Resize" in Canva, switch the unit dropdown from "px" to "cm," and enter the target centimeter dimensions. The Resize feature is available with Canva Pro, Canva for Teams, and Canva for Education plans.

To change px to cm on Canva, follow these 3 steps:

1. Open the Resize tool: Click the "Resize" button in the top toolbar of the Canva editor. On Canva Free, create a new design with "Custom size" and select the unit before starting.
2. Switch units to centimeters: Click the unit dropdown (showing "px" by default) and select "cm" from the options. Canva also supports inches (in) and millimeters (mm) as alternative units.
3. Enter the target dimensions: Type the desired width and height in centimeters and click "Resize" or "Copy & Resize" to apply the change.

Create a new canvas in Procreate, tap the "+" icon, select "Custom Size," then switch the unit from "Pixels" to "Centimeters" and set the DPI (Dots Per Inch) value.

To change px to cm on Procreate, follow these 4 steps:

1. Open Custom Canvas: Tap the "+" icon in the Gallery view, then tap the new canvas icon (rectangle with a "+" in the top right). This opens the Custom Canvas settings panel.
2. Switch to centimeters: Tap the unit label (showing "Pixels" by default) at the top of the dimensions fields. Select "Centimeters" from the dropdown. Procreate also supports millimeters (mm) and inches (in).
3. Set the DPI: Enter the target DPI value in the "DPI" field. Procreate defaults to 132 DPI on iPad. Use 300 DPI for high quality print output or 150 DPI for standard print. Higher DPI values reduce the maximum canvas size and the number of available layers.
4. Enter dimensions and create: Type the desired width and height in centimeters and tap "Create" to generate the canvas. Procreate calculates the pixel dimensions automatically based on the cm values and DPI setting.

No, px (pixels) and cm (centimeters) are not the same. Pixels are digital screen units and centimeters are physical measurement units. The conversion between px and cm requires a DPI (Dots Per Inch) value because the physical size of a pixel depends on screen resolution and pixel density.

There are 3 differences between px and cm:

DPI (Dots Per Inch) connects pixels to centimeters through the formula cm = px × 2.54 ÷ DPI. The W3C (World Wide Web Consortium) defines the CSS reference pixel at 96 DPI, meaning 1 px = 1/96 inch = 0.0265 cm in CSS. Graphic designers working in Adobe Photoshop, Figma, Sketch, or Canva convert between px and cm when moving designs from screen to print production.