Pixel to CM converter is the most accurate online Pixels to Centimeters conversion tool.
Pixel to CM converter lets you turn pixels into centimeters using your image resolution (PPI).
Enter the PPI and pixel value to get accurate centimeters instantly — ideal for printing, screens, and design.
How to use PX into CM converter tool?
- Enter the PPI (pixels per inch) of your image or screen.
- Type the pixels value you want to convert.
- Click Convert to get the size in centimeters.
- Common screens: 96 PPI (approx.).
- High-quality print: 300 PPI (standard for sharp results).
- Your file’s PPI is what matters for print size.
- You can round to 2 decimals for everyday work.
- Pixels with comma separators are accepted (e.g., 1,200).
- If PPI is unknown, try 96 (screen) or 300 (print) as a starting point.
- Leaving PPI blank—size in cm depends on PPI.
- Confusing PPI (image) with DPI (printer); use the image PPI here.
- Assuming 1 pixel equals a fixed length—it changes with PPI.
Pixels to Centimeters Conversion Table
The following table shows pixels to centimeters conversion values at a standard resolution (96 PPI).
It helps designers, developers, and students quickly estimate print and screen sizes.
| Pixel | Centimeter |
|---|---|
| 18.89px | 0.5cm |
| 37.8px | 1cm |
| 56.7px | 1.5cm |
| 75.6px | 2cm |
| 94.5px | 2.5cm |
| 113.39px | 3cm |
| 132.28px | 3.5cm |
| 151.18px | 4cm |
| 170.08px | 4.5cm |
| 188.98px | 5cm |
| 207.87px | 5.5cm |
| 226.77px | 6cm |
| 245.67px | 6.5cm |
| 264.57px | 7cm |
| 283.46px | 7.5cm |
| 302.36px | 8cm |
| 321.26px | 8.5cm |
| 340.16px | 9cm |
| 359.06px | 9.5cm |
| 377.95px | 10cm |
| 566.93px | 15cm |
| 755.9px | 20cm |
| 944.88px | 25cm |
| 1133.86px | 30cm |
What is PPI and how is it different from DPI?
PPI (Pixels Per Inch) measures the pixel density of a digital image or screen. It tells you how many pixels fit in a single inch.
DPI (Dots Per Inch), on the other hand, refers to printer dots when producing a physical copy.
While they are often used interchangeably, PPI affects digital image size and DPI affects print quality.
This explains why one pixel is not equal to a fixed millimeter. The size in cm depends entirely on the PPI/DPI setting of the image or screen.
Related Tools for Accurate Conversion
For more detailed conversions and calculations, explore these tools:
Paper Sizes in Pixels and Centimeters
Knowing the A4 and A3 paper sizes in both centimeters and pixels helps designers and printers prepare accurate layouts.
The values below are calculated at 72 PPI (screen) and 300 PPI (print).
| Paper Size | Dimensions (cm) | Pixels @72 PPI | Pixels @300 PPI |
|---|---|---|---|
| A4 | 21 × 29.7 cm | 595 × 842 px | 2480 × 3508 px |
| A3 | 29.7 × 42 cm | 842 × 1191 px | 3508 × 4961 px |
Use these dimensions to design print-ready files in Photoshop, Illustrator, or Figma without risking blurry results when printing.
Practical Use Cases of PX to CM Converter
The px to cm converter is not only a math tool—it is used daily by designers, students, and printing professionals.
Here are the most common scenarios where converting pixels to centimeters is essential:
print at the correct size without distortion.
especially for mobile screens and responsive design previews.
When combined with tools to resize image online or compress image, it guarantees sharp results.
Common Screen & Image Sizes in CM
Many users search for how wide their images or screens are in centimeters.
This table shows popular pixel dimensions converted with the Pixel to CM formula at 96 PPI (screen) and 300 PPI (print).
| Resolution | Pixels | Size @96 PPI (cm) | Size @300 PPI (cm) |
|---|---|---|---|
| HD | 1080 px | 28.58 cm | 9.14 cm |
| Full HD | 1920 px | 50.8 cm | 16.26 cm |
| 4K (UHD) | 3840 px | 101.6 cm | 32.52 cm |
These values show how the same pixel width changes dramatically depending on resolution settings —
highlighting why the Pixel to CM converter is so important for both digital and print work.
How to Find the PPI of Your Image or Screen
To use a Pixel to CM converter correctly, you need to know the PPI (pixels per inch).
Here are simple ways to check it on different platforms and tools:
Print Sizes at 300 DPI
When preparing designs for printing, the resolution is set to 300 DPI for sharp results.
Using the Pixel to CM formula, you can easily convert pixels to cm to know the real size of your file on paper.
| Pixels | Size in CM @300 DPI |
|---|---|
| 600 px | 5.08 cm |
| 1200 px | 10.16 cm |
| 2400 px | 20.32 cm |
| 3600 px | 30.48 cm |
| 4800 px | 40.64 cm |
For example, a photo that is 1200px wide will print at exactly 10.16 cm at 300 DPI.
This is why converting pixels to cm is essential when preparing posters, flyers, or banners.
If the size is too small, you may need to resize image online or compress image before printing.
Frequently Asked Questions
How many pixels is 1 cm?
It depends on the PPI. For example, at 96 PPI, 1 cm equals about 37.8 pixels.
What is 4.5 × 3.5 cm in pixels?
At 300 PPI, 4.5 cm × 3.5 cm equals 531 × 413 pixels.
Can I convert pixels to cm?
Yes, with the formula: cm = pixels ÷ PPI × 2.54. Or simply use our Pixel to CM converter tool above.
Is 1 pixel the same as 1 mm?
No. A pixel has no fixed physical size—it depends on the PPI. For example, at 96 PPI, 1 mm equals about 3.78 pixels.
What does Pixel to CM mean at 300 DPI?
At 300 DPI (print quality), 1000 pixels equals about 8.47 cm.
This setting is commonly used for professional printing.
How can I convert height from cm to inches?
You can use our CM to Inch converter
to quickly change centimeters into inches for height or object measurements.
How do I know my image’s PPI?
Check the image properties on Windows/Mac, or use tools like Photoshop, Illustrator, or our
PPI calculator.