Made Good Designs

Pixels to CM Converter

This free pixels to cm converter turns pixels into centimeters (and centimeters back into pixels) instantly, using the web standard of 96 DPI by default. Because a pixel has no fixed physical size, you can change the DPI to match your destination — 96 for screens, 300 for print. The conversion is bidirectional, so type a value in either field and the other updates as you go. Everything runs entirely in your browser: nothing is uploaded and there is no signup, so your measurements stay completely private.

How to use the pixels to cm converter

  1. Enter your value in the pixels field — for example, the width or height of an image, canvas, or design element.
  2. Set the DPI (resolution) to match where the result will be used: 96 for screens and web, 300 for print.
  3. Read the equivalent size in centimeters, which appears instantly as you type.
  4. To go the other way, type a value in the centimeters field — the converter solves for pixels using the same DPI.
  5. Copy the result straight into your design software, print dialog, or spec sheet.

There is nothing to install and no data leaves your device. The calculation happens in JavaScript on the page itself, so it works offline once loaded and never sends your measurements anywhere.

The pixels to cm formula

Converting pixels to centimeters depends on two things: the inch-to-centimeter constant and the resolution in dots per inch (DPI). One inch is exactly 2.54 cm, so the formula is:

cm = pixels × 2.54 ÷ DPI

At the web default of 96 DPI, a single pixel measures 2.54 ÷ 96 = 0.02646 cm. Worked examples at 96 DPI:

  • 100 px × 2.54 ÷ 96 = 2.646 cm
  • 500 px × 2.54 ÷ 96 = 13.23 cm
  • 1000 px × 2.54 ÷ 96 = 26.46 cm

To reverse the calculation and turn centimeters back into pixels, rearrange the formula:

pixels = cm × DPI ÷ 2.54

So 10 cm at 96 DPI is 10 × 96 ÷ 2.54 ≈ 378 px. Change the DPI and every result changes with it — which is exactly why resolution matters.

Why DPI (resolution) matters

A pixel is not a physical unit. On its own it only counts dots in an image; it says nothing about how big those dots are once printed or displayed. DPI — dots per inch — is what bridges the digital and the physical world. Only when you fix a DPI does a pixel gain a real-world size in centimeters.

The two values you will meet most often are 96 DPI and 300 DPI. 96 DPI is the CSS and web default: browsers assume it when they translate CSS pixels into physical sizes. At 96 DPI, 96 px equals exactly 2.54 cm (one inch). 300 DPI is the standard for print, where more dots are packed into each inch for sharp detail. At 300 DPI, 300 px equals 2.54 cm — so the same pixel count maps to a much smaller physical size.

That is the key takeaway: 1000 px is 26.46 cm on screen at 96 DPI, but only 8.467 cm when printed at 300 DPI. The pixels never changed — the resolution did. Always match the DPI to your output before trusting a centimeter figure.

Pixels to cm conversion table

The table below shows common pixel values converted to centimeters at both the screen default (96 DPI) and the print standard (300 DPI).

PixelsCM @96 DPICM @300 DPI
10.02646 cm0.008467 cm
100.2646 cm0.08467 cm
501.323 cm0.4233 cm
1002.646 cm0.8467 cm
50013.23 cm4.233 cm
100026.46 cm8.467 cm
192050.8 cm16.26 cm
300079.38 cm25.4 cm

Notice the pattern in the last two rows: 1920 px is exactly 50.8 cm (20 inches) at 96 DPI, and 3000 px is exactly 25.4 cm (10 inches) at 300 DPI. Whenever the pixel count is a whole multiple of the DPI, the centimeter figure lands on a clean inch value.

Common screen widths in centimeters

Designers often want to know how wide a screen layout would be if it were printed at its CSS size. Using the web default of 96 DPI, the table below converts popular pixel widths into centimeters.

Pixel widthWidth @96 DPICommon use
3759.92 cmMobile portrait (iPhone-class)
76820.32 cmTablet portrait
128033.87 cmSmall laptop / HD width
192050.8 cmFull HD desktop
3840101.6 cm4K UHD width

These are CSS-pixel sizes, not the true physical width of any given monitor — a real screen’s diagonal and pixel density determine that. They are still handy for sanity-checking how large a design maps at the browser’s assumed 96 DPI.

Why print shops ask for 300 DPI

When you send artwork to a printer, they almost always request 300 DPI. At that density the human eye can no longer pick out individual dots at normal reading distance, so text and images look crisp rather than pixelated. The catch is that 300 DPI packs far more pixels into every centimeter than a screen does. A photo that fills a 96 DPI screen at 1000 px wide (26.46 cm) shrinks to just 8.467 cm when printed at 300 DPI. If you want that same photo to print 26.46 cm wide at 300 DPI, you would need roughly 3125 px of source width. That is why print files are so much larger in pixel dimensions than web images — and why converting with the correct DPI before you export saves you from blurry, upscaled results.

Frequently asked questions

How many cm is 1 pixel?

At the web standard of 96 DPI, one pixel is 2.54 ÷ 96 = 0.02646 cm. The answer changes with resolution: at 300 DPI one pixel is only 0.008467 cm, and at 72 DPI it is about 0.0353 cm.

How do I convert pixels to cm?

Multiply the number of pixels by 2.54 and divide by your DPI: cm = pixels × 2.54 ÷ DPI. For 500 px at 96 DPI, that is 500 × 2.54 ÷ 96 = 13.23 cm. The converter above does this instantly once you set the DPI.

How many cm is 1000 pixels?

At 96 DPI, 1000 pixels equals 26.46 cm (1000 × 2.54 ÷ 96). At the 300 DPI print standard the same 1000 pixels measures just 8.467 cm, because more dots are packed into each inch.

Does a pixel have a fixed size in cm?

No. A pixel has no fixed physical size — it only becomes a real-world measurement once you choose a DPI. At 96 DPI a pixel is 0.02646 cm; at 300 DPI it is 0.008467 cm. Always fix the resolution before converting.

What DPI should I use for screen versus print?

Use 96 DPI for anything shown on a screen or the web, since that is the CSS default browsers assume. Use 300 DPI for print work, which is the standard resolution most print shops require for sharp output.

How many pixels are in 1 cm?

Rearrange the formula: pixels = cm × DPI ÷ 2.54. At 96 DPI, 1 cm is 1 × 96 ÷ 2.54 ≈ 37.8 px. At 300 DPI, 1 cm is about 118.1 px.

Why does the same pixel value give different centimeters?

Because the physical size of a pixel depends entirely on DPI. The pixel count stays the same, but a higher DPI packs those pixels into a smaller space, so the centimeter figure shrinks. This is why 1000 px is 26.46 cm at 96 DPI but 8.467 cm at 300 DPI.

Is this pixels to cm converter free and private?

Yes. The tool is completely free with no signup, and every conversion runs locally in your browser. Your pixel and centimeter values are never uploaded or stored on a server, so your data stays on your device.

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