1. What is DPI Conversion?

DPI (Dots Per Inch) conversion calculates how the DPI value changes when an image is resized while maintaining the same physical dimensions. This is important for maintaining print quality when changing image resolutions.

2. How Does the Calculator Work?

The calculator uses the DPI conversion formula:

Where:

• \( DPI_{source} \) — Original DPI value
• \( Resolution_{target} \) — New resolution in pixels
• \( Resolution_{source} \) — Original resolution in pixels

Explanation: The formula adjusts the DPI proportionally to the change in resolution to maintain equivalent print quality at different digital resolutions.

3. Importance of DPI Calculation

Details: Accurate DPI conversion ensures consistent print quality when resizing images. It's crucial for graphic designers, photographers, and anyone working with digital-to-print workflows.

4. Using the Calculator

Tips: Enter the original DPI value, the target resolution (new pixel dimensions), and the source resolution (original pixel dimensions). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between DPI and PPI?
A: DPI (Dots Per Inch) refers to printer dots, while PPI (Pixels Per Inch) refers to digital pixels. They're often used interchangeably but technically different.

Q2: Does changing resolution affect DPI?
A: Yes, if you change an image's pixel dimensions without changing its physical print size, the DPI will change proportionally.

Q3: What's a good DPI for printing?
A: 300 DPI is standard for high-quality prints. 150 DPI may be acceptable for large format prints viewed from a distance.

Q4: Can I increase DPI without losing quality?
A: Increasing DPI by reducing resolution will lower quality. True DPI increases require higher resolution source files.

Q5: Does DPI matter for digital displays?
A: No, DPI only matters for print. Digital displays use pixel dimensions directly.