Pixels to CM Converter
Convert pixels to centimeters based on DPI/DPI. For design and printing. Free online.
Free · No sign-up · Runs in your browser · Last reviewed November 2026
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Pixels: DPI:
About Pixels to CM Converter
Convert pixels to centimeters based on DPI/DPI. For design and printing. Free online. Pixel to CM Converter is a free tool from the Design category of RoviDev. It helps you generate and preview results ready to copy and paste into your project. Designed for front-end designers and developers.
How to use Pixels to CM Converter
- Open Pixel to CM Converter in RoviDev (you don't need to install anything or register).
- Enter the required data in the tool form.
- Press the button and see the result instantly on the screen.
Converting pixels to centimeters: the DPI formula and print sizes
Pixels have no fixed physical size. The size depends on the density, so the formula is cm = pixels / DPI x 2.54, where DPI means dots (or pixels) per inch. The tool starts with 300 pixels at 96 DPI, which gives 7.94 cm, and you can change both values.
Worked examples: a 1,200 px wide photo printed at 300 DPI is 1,200 / 300 x 2.54 = 10.16 cm, exactly 4 inches. A 1,920 px wide screen image at 96 DPI is 50.8 cm (20 inches). Going the other way, a 4 x 6 inch print at 300 DPI needs 1,200 x 1,800 pixels, and a US Letter page (8.5 x 11 in) needs 2,550 x 3,300 pixels.
- Use 300 DPI as the usual target for photo prints and 150 for large posters seen from a distance. 72 or 96 DPI is only a convention for screens, not a quality setting.
- DPI is metadata for printers. Changing it in an image editor without resampling changes only the printed size, not the pixel count.
- Browsers treat 96 CSS pixels as one inch, but phones and high-resolution laptops pack more physical pixels into each CSS pixel, so on-screen sizes vary.
- Enlarging a low-resolution image does not add detail. If the result calls for more pixels than you have, expect a soft print.
- For web layout units, use the px to rem converter. For inch conversions see cm to inches.
Frequently asked questions
What is the Pixel to CM Converter for?
Convert pixels to centimeters based on DPI/DPI. For design and printing. Free online. You just have to enter the data and you get the result instantly, without leaving the page.
Are the data I enter saved?
No. The calculation is done in your browser; We do not send or store your data on any server.
Can I use it from my mobile?
Yes. The tool is responsive and works on mobile, tablet and computer from any browser.
Can I copy the result to my project?
Yes. Copy the result with one click and paste it directly into your editor or project.
How many pixels are in a centimeter?
It depends on the DPI. At 300 DPI there are about 118.1 pixels per centimeter, and at 96 DPI about 37.8.
What DPI should I choose for printing?
Use 300 DPI for sharp photos and documents. Lower values, around 150, are acceptable for large formats viewed from farther away.