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DigiCalcs

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A screen size calculator computes a monitor's or TV's actual width, height, and pixel density (PPI) from the diagonal measurement and aspect ratio. It helps compare displays of different sizes and resolutions.

دليل خطوة بخطوة

  1. 1Use Pythagoras' theorem with the aspect ratio to derive width and height from diagonal
  2. 2For 16:9 aspect ratio: height = diagonal × 9 / √(16²+9²); width = height × 16/9
  3. 3PPI = √(horizontal pixels² + vertical pixels²) / diagonal inches

أمثلة محلولة

الإدخال
27-inch 16:9 monitor · 2560×1440 resolution
النتيجة
23.5" × 13.2" · 109 PPI
QHD resolution at common desk size
الإدخال
55-inch TV · 3840×2160 (4K)
النتيجة
47.9" × 27" · 80 PPI
Typical living room 4K TV

الإعدادات