Pixel Density
92 PPI
Mode
Screen PPI
Retina
No
| Device | Resolution | PPI |
|---|---|---|
| iPhone 15 | 1179×2556 | 460 |
| MacBook Pro 14" | 3024×1964 | 254 |
| 4K 27" Monitor | 3840×2160 | 163 |
| 1080p 24" Monitor | 1920×1080 | 92 |
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Result
A standard 1080p 24-inch monitor has about 92 PPI, well below Retina density. Text and icons appear noticeably larger than on higher-density screens.
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Result
A 12-megapixel camera image prints at 13.3 by 10 inches at full 300 DPI quality, large enough for a high-quality framed print.
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Result
To maintain the same physical print size at 300 DPI instead of 72 DPI, you would need 4.17 times more pixels in each dimension, requiring AI upscaling or a higher-resolution source.
PPI (pixels per inch) measures screen pixel density, while DPI (dots per inch) measures print resolution. PPI describes how many pixels fit in one inch of screen, and DPI describes how many ink dots a printer places per inch. They are often used interchangeably but refer to different contexts.
| Metric | Context | Typical Range | Example |
|---|---|---|---|
| PPI | Screens | 72–460+ | iPhone 15 = 460 PPI |
| DPI | 72–600+ | Photo print = 300 DPI |
300 DPI is the standard for high-quality photo prints viewed at arm's length. For large posters viewed from a distance, 150 DPI is acceptable. Fine art reproductions often use 600 DPI for maximum detail. Web images only need 72 DPI since screens render pixels, not dots.
Multiply the desired print dimension in inches by the target DPI. For an 8×10 inch print at 300 DPI, you need 2,400×3,000 pixels (7.2 megapixels). For a 4×6 print at 300 DPI, you need 1,200×1,800 pixels (2.2 megapixels).
| Print Size | At 150 DPI | At 300 DPI | At 600 DPI |
|---|---|---|---|
| 4×6" | 600×900 px | 1,200×1,800 px | 2,400×3,600 px |
| 8×10" | 1,200×1,500 px | 2,400×3,000 px | 4,800×6,000 px |
| 11×14" | 1,650×2,100 px | 3,300×4,200 px | 6,600×8,400 px |
Apple defines Retina as any display where individual pixels are indistinguishable at normal viewing distance, generally 200+ PPI for laptops and 300+ PPI for phones. The iPhone 15 has 460 PPI, the MacBook Pro 14" has 254 PPI, and a standard 27" 4K monitor has 163 PPI.
No. Changing the DPI metadata in an image file does not add or remove pixels. It only changes how large the image prints. A 3,000×2,000 pixel image is 10×6.67 inches at 300 DPI or 41.67×27.78 inches at 72 DPI. The pixel data is identical in both cases.
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Last Updated: Mar 9, 2026
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