Screen Size Calculator Comparison


The Screen Size Calculator Comparison is a versatile tool for users who want to compare screen sizes with different aspect ratios. Whether you are deciding between displays or planning a home theater setup, this calculator allows you to input the diagonal size and choose from various aspect ratios to see how they affect the screen dimensions.


The calculation involves using the Pythagorean theorem to find the width and height of the screen based on the selected aspect ratio and diagonal size. The Pythagorean theorem ensures that the width, height, and diagonal size form a right-angled triangle.

How to Use

  1. Diagonal Size (inches): Enter the diagonal size of the screen.
  2. Aspect Ratio: Select the desired aspect ratio from the dropdown menu.
  3. Click the “Calculate” button to obtain the width and height of the screen for comparison.


Consider a screen with a diagonal size of 40 inches and compare its dimensions for two different aspect ratios: 16:9 and 4:3. Input these values into the calculator to see how the aspect ratios affect the screen dimensions.


  1. Q: How does aspect ratio impact screen dimensions?
    • A: Aspect ratio determines the proportional relationship between the width and height of the screen. Different aspect ratios result in varying screen shapes.
  2. Q: Can I use this calculator to compare more than two aspect ratios?
    • A: Yes, the calculator supports multiple aspect ratios. Select the ones you want to compare from the dropdown menu.
  3. Q: Is there an aspect ratio that is better for specific content types?
    • A: Certain aspect ratios, like 16:9, are standard for HD content, while others, like 21:9, are popular for cinematic experiences.
  4. Q: How can I use the results for planning a home theater setup?
    • A: The results help you visualize how different aspect ratios impact screen dimensions, aiding in the selection of a display that suits your preferences.
  5. Q: Can I compare dimensions in both inches and centimeters?
    • A: The calculator provides results in the same unit as the input (inches).


The Screen Size Calculator Comparison is a valuable tool for users comparing different screen sizes with various aspect ratios. By inputting the diagonal size and selecting different aspect ratios, users can make informed decisions about the screen dimensions that best meet their preferences and requirements.

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