Question 1

What is a Screen Size Calculator?

Accepted Answer

A screen size calculator converts a display's diagonal size (how screens are marketed) into actual width and height dimensions using the aspect ratio. The stated diagonal is the corner-to-corner measurement — a 55-inch TV is not 55 inches wide.

Question 2

How does the Screen Size Calculator work?

Accepted Answer

Width = Diagonal × cos(arctan(height_ratio / width_ratio)) Then: Height = Diagonal × sin(arctan(height_ratio / width_ratio)) Then: For 16:9: Width = Diagonal × 0.8721, Height = Diagonal × 0.4906 Then: Area = Width × Height.

Question 3

Can you give an example of how to use the Screen Size Calculator?

Accepted Answer

Example: Input 55" TV at 16:9 gives a result of Width: 47.96" (122cm) × Height: 27.0" (68.6cm) (Area: 1,295 in² = 83,571 cm²).

Question 4

Is the Screen Size Calculator free to use?

Accepted Answer

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

Question 5

How accurate is the Screen Size Calculator?

Accepted Answer

Our Screen Size Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Screen Size Calculator

Screen Size Calculator

What is Screen Size Calculator?

How to Use Screen Size Calculator

Example Screen Size Calculator

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