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PPI Calculator

Calculate pixels per inch (PPI) for any screen. Compare device densities and find retina-quality displays.

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Pixel Density
109 PPI
📺Standard
109PPI0600
📐
Resolution
2560 x 1440
🔢
Total Pixels
3.7 MP
🖼️
Aspect Ratio
16:9
🔬
Dot Pitch
0.233 mm
↔️
Physical Width
23.5"
↕️
Physical Height
13.2"
📏
Diagonal Pixels
2,937
🖨️
DPI Equivalent
109

👁️ Retina Distance

At 109 PPI, individual pixels become invisible at approximately 80 cm (32") or further. May see individual pixels at close range.

📊 Device Comparison

📱 iPhone 15 Pro
461
📱 iPhone 15 Pro Max
460
📱 Samsung S24 Ultra
505
📋 iPad Pro 13"
265
💻 MacBook Air 13"
225
💻 MacBook Pro 16"
254
🖥️ Dell U2723QE
163
🖥️ 1080p 24"
92
🖥️ 1440p 27"
109
🖥️ 4K 32"
138
400+ Exceptional 300+ Retina 200+ Sharp 100+ Standard

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Frequently Asked Questions

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