Pixels to inches converter, at 72, 96, 150, 300 PPI or your own.

To convert pixels to inches, divide the pixels by the PPI (pixels per inch). So 1,920 pixels is 20 inches at 96 PPI, 6.4 inches at 300 PPI and 26.67 inches at 72 PPI. A pixel has no fixed size on its own. It only becomes a length when you say how many pixels fit in one inch, so the PPI is part of every answer on this page.

How to use the converter

1. Type the amount in the Pixels (px) box. A decimal such as 2.5 or a fraction such as 3/4 works.
2. Pick the Pixels per inch (PPI) in the side column: 72, 96 (the CSS inch), 150, 300, 600 or Custom to type your own.
3. The big result shows Inches (in). The cards under it give centimeters, millimeters, points and CSS pixels.
4. Look at The same amount at every PPI to compare all five presets at once. Click a PPI in that table to use it.
5. Drop a picture on Your picture to read its size in pixels and its print size at each PPI. Use the width and Use the height send that number to the converter.
6. Copy result and Copy link keep the answer. Start again resets the page. The swap button turns pixels into inches and back.

Which PPI should I use

Use the PPI of the place where the picture will be seen. For something shown in a web page, the W3C CSS Values and Units Module Level 4 defines 1 inch as 96 CSS pixels, so 96 is the number to use for CSS lengths. For a print, the printer or print shop tells you what it needs, and 300 PPI is a common choice. I found no official print rule, so ask the shop. The same CSS document defines 1 point as 1/72 of an inch, which is why points and pixels line up at 72 PPI.

The table below shows one size, 1,920 pixels, at each PPI of the converter. The inches shrink as the PPI rises, because more pixels are squeezed into each inch.

A CSS inch is not a ruler inch

The 96 in "96 pixels per inch" is a rule for CSS, not a measurement of your screen. A 24 inch monitor with 1,920 × 1,080 pixels has a diagonal of 2,202.9 pixels, so its real density is 91.8 PPI, and its screen is 20.92 inches wide. In CSS the same 1,920 pixels count as 20 inches. A ruler held up to the glass will not agree with CSS. To find the real PPI of a screen, use the PPI calculator.

Pixels to inches for a picture

For a photo, divide its width and its height by the PPI separately. A 4,000 × 3,000 pixel photo at 300 PPI prints at 13.33 × 10 inches. At 150 PPI the same file prints larger, 26.67 × 20 inches, but each pixel is bigger, so it looks softer up close. Drop the file on Your picture and the page does this for every PPI at once. The PPI value saved inside a file does not change the pixel count, so it is ignored here. The change image DPI tool writes that value if you need it.

Worked examples

• A 1,080 pixel tall video frame at 96 PPI. 1,080 ÷ 96 = 11.25 inches.
• A 1,200 pixel wide photo at 300 PPI. 1,200 ÷ 300 = 4 inches, the long side of a 4 × 6 print.
• A 640 pixel banner at 72 PPI. 640 ÷ 72 = 8.89 inches, which is also 8.89 × 72 = 640 points.
• A 2,550 pixel wide scan at 300 PPI. 2,550 ÷ 300 = 8.5 inches, the full 8.5 inch width of US Letter paper.
• A custom screen of 220 PPI. Choose Custom, type 220, then 1,100 pixels is 5 inches.
• Back the other way. 3 inches at 300 PPI is 900 pixels. Press the swap button and type 3.

Where the numbers come from

A pixel has no fixed size in inches, so the factor is the PPI you pick. The one official definition is on the web: the W3C CSS Values and Units Module Level 4 (Working Draft of 12 March 2024, checked 27 Oct 2026) says that 1 inch = 2.54 cm = 96 CSS pixels and that 1 point is 1/72 of an inch. NIST also lists the inch as exactly 2.54 cm (SP 811, Appendix B.8, checked 27 Oct 2026). For print there is no official PPI rule that I could find, so the page does not claim one. The converter keeps every figure as an exact fraction and rounds only the last digit shown.

Mistakes to avoid

The first is picking a PPI at random. The same pixels give different inches at 72, 96 and 300, so check where the picture will be used. The second is dividing the wrong way: inches are always fewer than pixels when the PPI is above 1. The third is trusting the DPI number in the file. It is a tag, not a size. Finally, a pixel count has to be a whole number, but an inch figure can be a decimal, so use Decimals to see more places.

Related pages: Inches to pixels, PPI calculator, Cm to inches and Image resizer.