A DPI/PPI image resolution calculator helps you turn a physical print size into digital pixel dimensions. It uses PPI (pixels per inch) for screens and DPI (dots per inch) for printing. For high-quality prints, aim for around 300 PPI/DPI.
Formula:
Pixel Dimensions = Print Size (in inches) × Desired PPI
Example:
A 10 in × 8 in print at 300 PPI becomes 3000 px × 2400 px.
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DPI vs PPI Calculator
- PPI (Pixels Per Inch): Shows how many pixels fit into one inch of a digital image or screen.
- DPI (Dots Per Inch): Shows how many ink dots a printer puts in one inch on paper.
| Image Resolution (px) | Print Size @ 72 DPI (in) | Print Size @ 150 DPI (in) | Print Size @ 300 DPI (in) | Print Size @ 600 DPI (in) |
|---|---|---|---|---|
| 800 x 600 | 11.1 x 8.3 | 5.3 x 4 | 2.7 x 2 | 1.3 x 1 |
| 1920 x 1080 | 26.7 x 15 | 12.8 x 7.2 | 6.4 x 3.6 | 3.2 x 1.8 |
| 3000 x 2000 | 41.7 x 27.8 | 20 x 13.3 | 10 x 6.7 | 5 x 3.3 |
| 6000 x 4000 | 83.3 x 55.6 | 40 x 26.7 | 20 x 13.3 | 10 x 6.7 |
Image Resolution Calculator for Print
An image resolution calculator for print helps you figure out an image’s print size and quality.
Formulas:
- Pixels → Print Size: Print Size (inches) = Pixel Dimension ÷ DPI
- Print Size → Pixels: Pixel Dimension = Print Size × DPI
Pixels Per Inch (PPI) Calculation Tool
A Pixels Per Inch (PPI) calculator finds how many pixels fit into one inch of a screen or image. The main formula is:
PPI=diagonal (in inches)width2+height2
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Minimum DPI for High Quality Printing
For high-quality printing in the United States, 300 DPI is generally considered the standard for sharp, clear prints. If the print will be viewed from a distance, like posters or banners, a lower 150 DPI may be enough.
Print Size to Pixel Dimensions Conversion
To convert print size to pixel dimensions, use this formula:
Pixels=Inches×DPI
Example:
For a 10 × 8-inch photo at 300 DPI:
- Width: 10 × 300 = 3000 px
- Height: 8 × 300 = 2400 px
Screen Resolution to PPI Calculator
To find a display’s pixel density (PPI), use this formula:
PPI=diagonal in incheswidth2+height2
Example: A 1920 × 1080 screen with a 10-inch diagonal has a PPI of about 220.3. Higher PPI means sharper text and images, and good screens usually have over 200 PPI.
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Optimal Image Resolution for Web and Print
For the web, use about 72 PPI so images load quickly on screens. For printing, aim for around 300 DPI to get crisp, high-quality prints.
FAQs for DPI/PPI Image Resolution Calculator
What is the difference between DPI and PPI?
DPI (dots per inch) measures printer resolution — how many ink dots a printer places per inch.
PPI (pixels per inch) measures digital image resolution — how many pixels appear per inch on a screen.
How do I calculate DPI using image pixels and print size?
DPI is calculated by dividing the image’s pixel dimensions by the print size in inches: DPI = pixels ÷ inches.
What DPI is best for high-quality printing?
For high-quality printing, a DPI of 300 or higher is recommended, as it ensures sharp, detailed images without visible pixelation.
Does PPI matter for digital or web images?
PPI does not affect how images display on screens; what matters for digital/web images is the pixel dimensions, not the PPI setting.
How can I convert print size in inches to pixels?
To convert print size to pixels, multiply inches by the desired DPI: Pixels = Inches × DPI.
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