1. What is Pixels To Cm Conversion?

The pixels to centimeters conversion calculates the physical size of a digital image when printed or displayed, based on the resolution (PPI) of the output device.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( pixels \) — Number of pixels in the digital image
• \( ppi \) — Pixels per inch (resolution of the output device)
• \( 2.54 \) — Conversion factor from inches to centimeters

Explanation: The formula converts pixel dimensions to physical size by accounting for the output device's resolution and converting inches to centimeters.

3. Importance of PPI in Conversion

Details: PPI (pixels per inch) is crucial because it determines how densely pixels are packed in the output. Higher PPI means smaller physical size for the same pixel count.

4. Using the Calculator

Tips: Enter the number of pixels and the PPI (pixels per inch) of your output device. Common PPI values: 72 (web), 300 (print), 96 (Windows default).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between PPI and DPI?
A: PPI refers to pixels per inch in digital images, while DPI refers to dots per inch in printed output. They're often used interchangeably but technically different.

Q2: Why does my image print smaller than expected?
A: This happens when the printer uses higher PPI than you calculated with. Check your printer's resolution settings.

Q3: How do I find my screen's PPI?
A: Calculate using screen resolution and physical size: PPI = √(width² + height²) / diagonal size in inches.

Q4: Is 72 PPI standard for web images?
A: While 72 PPI was once standard, modern high-resolution displays often have much higher PPI (e.g., 200-400 PPI for smartphones).

Q5: Does changing PPI affect image quality?
A: Changing PPI in software without resampling doesn't affect quality - it only changes the print size. The actual pixels remain the same.