rodrigopolo.com — Visual Calculator

Display Distance, Retina & Dimension Calculator

Is your display retina? At what distance does it become retina? What are your screen dimensions and PPI? Configure this to set Photoshop to accurate print size.

Aspect ratio
Choose a preset or enter a custom ratio. Old TVs use 4:3, modern displays 16:9.
:
Aspect ratio from resolution
Enter your screen resolution to derive the aspect ratio above.
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Physical screen dimensions (inches)
Enter any one value — width, height, or diagonal — and the others update automatically.
Screen resolution (pixels)
HDTV: 1920×1080. 4K: 3840×2160. MacBook Pro Retina: 2880×1800.
PPI / DPI
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pixels per inch
Retina
—
at 11" viewing distance
Retina distance
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inches for perfect perception
Aspect ratio
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W : H
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Reference — notable devices
Device Width px Height px Diagonal" PPI Retina dist"
MacBook Pro M4 16" (2024)3456223416.225413.53
MacBook Pro M4 14" (2024)3024196414.225413.54
iPad Pro M4 13" (2024)2752206413.026512.99
iPad Pro M4 11" (2024)2420166811.026412.87
iPad mini 7 — A17 Pro (2024)226614888.332710.53
Samsung Galaxy S25 Ultra (2025)312014406.94986.90
Samsung Galaxy S25 (2025)234010806.24168.27
iPhone 16 Pro Max (2024)286813206.94607.51
iPhone 16 Pro (2024)262212066.34607.50
Google Pixel 9 Pro (2024)285612806.34976.92