Display resolutions maths - calculator and tables(dotforward.de)

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Display resolutions maths - calculator and tables

https://dotforward.de/sslkunde/beta.unclassified.de/projekte/displayresolution/?diagonal=14.1&resh=1024&resv=768

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Sample computation:

Input:

  Diagonal: 14.1 inch 
  Resolution: 1024 × 768 pixels

Output:

  Diagonal: 35.8 cm 
  Size: 28.7 × 21.5 cm, 0.8 Megapixels 
  Resolution: 90.8 dpi 
  Pixel pitch: 0.280 mm 
  Aspect ratio: 4:3 
  Viewing distance: 50 - 70 cm