CM to Pixels Converter – Instantly Convert Centimeters to Pixels Online
Easily convert cm to pixels (centimeters to px) for printing, web design, and digital graphics. This free online tool helps you find the exact pixel dimensions for your images, photos, and layouts, based on your chosen DPI (dots per inch).
How to Convert Centimeters to Pixels
- Enter the width and height in centimeters (cm).
- Set your desired DPI (pixels per inch) – common values are 96 for web, 300 for print.
- The tool instantly shows the equivalent size in pixels (px).
3.5cm *4.5cm passport photo size in pixel at 300DPI , 200 DPi and 96 DPI
To convert centimeters (cm) to pixels at a given DPI (dots per inch), you need to use the following formula:
Pixels = Centimeters * (DPI / 2.54)
Where:
- Centimeters is the length in centimeters.
- DPI is the resolution in dots per inch.
- 2.54 is the number of centimeters in one inch.
Let's calculate the pixel dimensions for 3.5cm x 4.5cm at 300 DPI, 200 DPI, and 96 DPI:
1. At 300 DPI:
- Width: 3.5 cm * (300 DPI / 2.54 cm/inch) ≈ 413 pixels
- Height: 4.5 cm * (300 DPI / 2.54 cm/inch) ≈ 531 pixels
Therefore, 3.5cm x 4.5cm at 300 DPI is approximately 413 x 531 pixels.
2. At 200 DPI:
- Width: 3.5 cm * (200 DPI / 2.54 cm/inch) ≈ 276 pixels
- Height: 4.5 cm * (200 DPI / 2.54 cm/inch) ≈ 354 pixels
Therefore, 3.5cm x 4.5cm at 200 DPI is approximately 276 x 354 pixels.
3. At 96 DPI:
- Width: 3.5 cm * (96 DPI / 2.54 cm/inch) ≈ 132 pixels
- Height: 4.5 cm * (96 DPI / 2.54 cm/inch) ≈ 170 pixels (calculation based on the formula)
Therefore, 3.5cm x 4.5cm at 96 DPI is approximately 132 x 170 pixels.
In summary:
| Resolution (DPI) |
Width (pixels) |
Height (pixels) |
| 300 |
413 |
531 |
| 200 |
276 |
354 |
| 96 |
132 |
170 |
CM to Pixels Formula
To convert centimeters to pixels, use the formula:
pixels = centimeters × DPI ÷ 2.54
For example, to convert 3.5 cm to pixels at 300 DPI: 3.5 × 300 ÷ 2.54 = 413.39 px
Why Convert CM to Pixels?
- Printing photos: Ensure your image is the right size and resolution for passport photos, ID cards, and official documents.
- Web design: Match print layouts to digital screens by converting cm to px for CSS and HTML.
- Graphic design: Prepare artwork for both print and digital use with accurate dimensions.
Frequently Asked Questions
How many pixels is 1 cm? At 96 DPI, 1 cm = 37.8 px. At 300 DPI, 1 cm = 118.11 px.
How do I convert cm to px for printing? Use the formula above and set DPI to your printer's resolution (usually 300 DPI for high quality).
Can I convert pixels to cm? Yes! Just use the reverse formula: cm = pixels × 2.54 ÷ DPI.
References
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