How do I convert pixels to inches?

To convert pixels to inches, divide the number of pixels by the DPI/PPI (dots/pixels per inch). For example, 300 pixels at 300 DPI = 1 inch. At 96 DPI (standard screen), 96 pixels = 1 inch. At 72 DPI (traditional print), 72 pixels = 1 inch.

How do I convert inches to pixels?

To convert inches to pixels, multiply the number of inches by the DPI/PPI. For example, 2 inches at 300 DPI = 600 pixels. At 96 DPI, 2 inches = 192 pixels. The higher the DPI, the more pixels per inch and the higher the image quality.

How do I convert pixels to points?

To convert pixels to points, multiply by 72 and divide by the DPI. Since 1 point = 1/72 inch, and 1 pixel = 1/DPI inch, the formula is: points = pixels x 72 / DPI. At 72 DPI, 1 point = 1 pixel. At 96 DPI, 1 point = 1.333 pixels.

How do I convert points to pixels?

To convert points to pixels, multiply by DPI and divide by 72. Formula: pixels = points x DPI / 72. For example, 12 pt text at 96 DPI = 12 x 96 / 72 = 16 pixels. This is why 12 pt text appears as 16 px on most screens.

> >Pixel Converter

Pixel Converter

Convert between pixels, points, picas, millimeters, centimeters, and inches at any DPI/PPI. Select a common DPI preset or enter a custom value for screen or print conversions.

DPI / PPI

Value

From

Pixel Conversion Result

300 Pixels (px) = 3.1250 Inches (in)

Physical size: 3.1250 inches

At 96 DPI

Common DPI Reference

DPI/PPI	Common Usage	1 inch =
72	Traditional Mac screen, print preview	72 px
96	Standard Windows/web screen	96 px
150	Newspaper print quality	150 px
200	Acceptable photo print quality	200 px
300	Standard high-quality print	300 px
600	Professional photo/art print	600 px
1200	High-end fine art print	1200 px

Related Calculators

External Resources

Wikipedia: Dots Per Inch Wikipedia: Pixel Density W3C: CSS Units

Frequently Asked Questions

How do I convert pixels to inches?: To convert pixels to inches, divide the number of pixels by the DPI/PPI (dots/pixels per inch). For example, 300 pixels at 300 DPI = 1 inch. At 96 DPI (standard screen), 96 pixels = 1 inch. At 72 DPI (traditional print), 72 pixels = 1 inch.
How do I convert inches to pixels?: To convert inches to pixels, multiply the number of inches by the DPI/PPI. For example, 2 inches at 300 DPI = 600 pixels. At 96 DPI, 2 inches = 192 pixels. The higher the DPI, the more pixels per inch and the higher the image quality.
How do I convert pixels to points?: To convert pixels to points, multiply by 72 and divide by the DPI. Since 1 point = 1/72 inch, and 1 pixel = 1/DPI inch, the formula is: points = pixels x 72 / DPI. At 72 DPI, 1 point = 1 pixel. At 96 DPI, 1 point = 1.333 pixels.
How do I convert points to pixels?: To convert points to pixels, multiply by DPI and divide by 72. Formula: pixels = points x DPI / 72. For example, 12 pt text at 96 DPI = 12 x 96 / 72 = 16 pixels. This is why 12 pt text appears as 16 px on most screens.
How many pixels are in a pica?: There are 12 points in a pica and 1 point = 1/72 inch. To convert picas to pixels: pixels = picas x 12 x DPI / 72. At 72 DPI, 1 pica = 12 pixels. At 96 DPI, 1 pica = 16 pixels. At 300 DPI, 1 pica = 50 pixels.
How do I convert mm to pixels?: To convert millimeters to pixels: pixels = mm x DPI / 25.4 (since 1 inch = 25.4 mm). For example, 10 mm at 300 DPI = 10 x 300 / 25.4 = 118.11 pixels. At 96 DPI, 10 mm = 37.8 pixels.
How do I convert cm to pixels?: To convert centimeters to pixels: pixels = cm x DPI / 2.54 (since 1 inch = 2.54 cm). For example, 5 cm at 300 DPI = 5 x 300 / 2.54 = 590.55 pixels. At 96 DPI, 5 cm = 188.98 pixels.
What is the standard DPI for web design?: The standard DPI for web design is 96 DPI (or PPI). This is the default resolution for most computer monitors and is used by CSS specifications. However, modern high-resolution (Retina) displays may have 192 DPI or higher at the hardware level.
What is the standard DPI for print?: The standard DPI for high-quality print is 300 DPI. Newspapers typically use 150-200 DPI, magazines use 300 DPI, and fine art prints may use 600-1200 DPI. Higher DPI means more detail and sharper prints, but also larger file sizes.
What is the difference between DPI and PPI?: DPI (dots per inch) refers to printer resolution (ink dots), while PPI (pixels per inch) refers to digital image or display resolution. They are often used interchangeably but are technically different: DPI is output, PPI is input/display.
How many pixels in an inch at 72 DPI?: At 72 DPI, there are 72 pixels per inch. This is the traditional screen resolution for older Mac displays. 1 inch = 72 pixels at 72 DPI. This standard was set by Apple for the original Macintosh in 1984.
How many pixels in an inch at 96 DPI?: At 96 DPI, there are 96 pixels per inch. This is the standard Windows display resolution. 1 inch = 96 pixels. Most CSS and web measurements are based on the assumption of 96 DPI, though modern devices often have higher physical pixel densities.
How many pixels in an inch at 300 DPI?: At 300 DPI, there are 300 pixels per inch. This is the standard for high-quality print. 1 inch = 300 pixels at 300 DPI. A 4 x 6 inch print at 300 DPI requires 1200 x 1800 pixels.
What is the difference between a point (pt) and a pixel (px)?: A point (pt) is 1/72 of an inch, a physical measurement. A pixel (px) is a digital unit that varies with screen resolution. At 72 DPI, 1 pt = 1 px. At 96 DPI, 1 pt = 1.333 px. In CSS, 1 pt = 1.333 px on a 96 DPI screen.
How many millimeters in a pixel at 300 DPI?: At 300 DPI, 1 pixel = 25.4 / 300 = 0.0847 mm. This means a 300 DPI image has pixels approximately 0.085 mm apart. For reference, the human eye can typically distinguish details down to about 0.1 mm at normal viewing distances.
How do I calculate the pixel dimensions of a printed photo?: Multiply the print size (inches) by the DPI. For an 8x10 print at 300 DPI: 8 x 300 = 2,400 pixels wide, 10 x 300 = 3,000 pixels tall. Total pixels = 2,400 x 3,000 = 7.2 megapixels.
What size is a 1920x1080 image in inches?: At 96 DPI (screen): 1920/96 = 20 inches wide, 1080/96 = 11.25 inches tall. At 300 DPI (print): 1920/300 = 6.4 inches wide, 1080/300 = 3.6 inches tall. The physical size depends entirely on the DPI.
How many pixels in a 4x6 inch photo at 300 DPI?: A 4x6 inch print at 300 DPI requires: 4 x 300 = 1,200 pixels (height) and 6 x 300 = 1,800 pixels (width). Total: 1,200 x 1,800 = 2.16 megapixels. Most modern smartphone cameras (12+ MP) can easily produce 300 DPI 4x6 prints.
What is a Retina display resolution?: Retina display is Apple's term for screens with a high enough pixel density that the human eye cannot distinguish individual pixels at normal viewing distance. This typically means 192 DPI or higher for phones (326 DPI for iPhones) and 218+ DPI for laptops.
How do CSS pixels differ from device pixels?: CSS pixels (also called logical pixels, dip, or dp) are abstract units used by web browsers. On standard screens, 1 CSS pixel = 1 device pixel. On Retina/high-DPI screens, 1 CSS pixel = 2 or more device pixels. This is controlled by the device pixel ratio (DPR).
What is the standard DPI for a smartphone?: Smartphone displays range from 300-600 DPI. The iPhone 15 has 460 DPI. Samsung Galaxy S24 has 416 DPI. Google Pixel 8 has 428 DPI. These high densities allow text and images to appear smooth without visible pixelation at normal viewing distances.
How many pixels are in an A4 page at 300 DPI?: A4 is 210 x 297 mm (8.27 x 11.69 inches). At 300 DPI: 8.27 x 300 = 2,480 pixels wide, 11.69 x 300 = 3,508 pixels tall. Total: approximately 8.7 megapixels for a full-page image at 300 DPI.
How do I convert a PDF from points to pixels?: PDFs use points as the default unit (1 pt = 1/72 inch). To render at screen resolution (96 DPI): multiply point dimensions by 96/72 = 1.333. A 612 x 792 pt US Letter page becomes 816 x 1056 pixels at 96 DPI, or 2550 x 3300 pixels at 300 DPI.
What is the relationship between DPI and image quality?: Higher DPI means more pixels per inch, resulting in sharper, more detailed images. However, the required DPI depends on viewing distance. For handheld prints: 300 DPI. For billboards viewed from afar: as low as 10-20 DPI can appear sharp.
How many megapixels do I need for a 24x36 inch print?: At 300 DPI: 24 x 300 = 7,200 pixels, 36 x 300 = 10,800 pixels. Total: 7,200 x 10,800 = 77.76 megapixels. At 200 DPI (acceptable quality): 24 x 200 = 4,800, 36 x 200 = 7,200, total 34.56 megapixels.
How do I calculate the file size of an image in megabytes?: File size = (width x height x bits-per-pixel) / 8 / 1,000,000. For a 3000x2000 image at 24-bit color (RGB): 3000 x 2000 x 24 / 8 = 18,000,000 bytes = 18 MB uncompressed. JPEG compression typically reduces this to 2-5 MB.
What is the standard pixel density for video?: Video pixel density is typically measured by resolution, not PPI. 720p = 1280x720, 1080p = 1920x1080, 4K = 3840x2160, 8K = 7680x4320. The PPI depends on the screen size. A 55-inch 4K TV has about 80 PPI, while a 6-inch 1080p phone has about 367 PPI.
How do I choose the right DPI for scanning?: For most documents: 200-300 DPI. For photos: 300-600 DPI. For film/slides: 1200-4800 DPI. For archiving: 300 DPI for documents, 600 DPI for photos. Higher DPI captures more detail but creates larger files. OCR (text recognition) works well at 300 DPI.
What is the difference between em, rem, and px in CSS?: In CSS, em is relative to the parent element's font size, rem is relative to the root (html) font size, and px is an absolute unit (1/96 inch). For responsive design, rem is preferred over px. For print stylesheets, pt or cm may be more appropriate.
How many pixels is 1 inch on a 4K monitor?: A 27-inch 4K (3840x2160) monitor has approximately 163 PPI. So 1 inch = 163 pixels. A 32-inch 4K monitor has about 138 PPI (1 inch = 138 pixels). A 24-inch 4K monitor has about 184 PPI (1 inch = 184 pixels). The physical DPI depends on both resolution and screen size.