PX to CM Converter
Result: 2.54cm
Calculation based on the CSS reference pixel of 37.795275591 pixels per inch (96px = 2.54cm).
How to Use the Converter?
Select the input field labeled "Pixels"
Change the number in an input field
Converter will automatically convert
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PX to CM: How the Conversion Works
Pixels are digital units tied to screen resolution, while centimeters are a physical unit of length used throughout the metric system. The CSS specification standardizes the relationship at 96 pixels per inch, and since 1 inch equals 2.54cm, that works out to roughly 37.8px per centimeter.
This conversion is helpful when preparing print-ready materials measured in centimeters, verifying that a digital design will match real-world physical dimensions, or working with European paper and packaging sizes that use the metric system by default.
For example, an A4 page (21cm × 29.7cm) equals roughly 794px × 1123px at 96 DPI. A 10cm × 15cm photo print equals about 378px × 567px.
Use the converter above to instantly switch between pixels and centimeters for any value.
Common PX to CM Conversions
19px
0.5cm
38px
1cm
96px
2.54cm
189px
5cm
378px
10cm
567px
15cm
794px
21cm
1123px
29.7cm
Quick Conversion Tips
Converting PX to CM
Divide the pixel value by 37.795275591. Example: 378px ÷ 37.8 ≈ 10cm
Converting CM to PX
Multiply the centimeter value by 37.795275591. Example: 10cm × 37.8 ≈ 378px
Learn More About CSS Units
PX vs Inches, MM, and CM
Learn how pixels relate to inches, millimeters, and centimeters using the CSS 96 DPI standard, and avoid the most common print-design conversion mistake.
Read our comprehensive guide →Related Converters
Frequently Asked Questions
How many pixels are in a centimeter?
1 centimeter equals approximately 37.8 pixels, based on the CSS standard of 96 pixels per inch (since 1in = 2.54cm).
How do I convert px to cm?
Divide the pixel value by 37.795275591. For example, 378px ÷ 37.8 ≈ 10cm. Use the converter above for instant results.
How do I convert cm to px?
Multiply the centimeter value by 37.795275591. For example, 5cm × 37.8 ≈ 189px.
Is this conversion accurate for print design?
It's accurate for the CSS/web 96 DPI standard. For professional print output, always check your printer or print service's actual DPI setting, which is often 300 DPI or higher.
Why isn't 1cm exactly a round number of pixels?
Because the ratio derives from combining the 96px-per-inch CSS standard with the metric definition of 2.54cm per inch, resulting in a repeating decimal (~37.795px per cm).