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Viewing Angle Calculator

Formula

The formula to calculate the Viewing Angle is:

$VA = 2 \arctan\left(\frac{SW / 2}{D}\right)$

Where:

$VA$ is the viewing angle (degrees).
$SW$ is the screen width (meters).
$D$ is the distance to the screen (meters).

Example

Let's say the screen width is 2 meters and the distance to the screen is 3 meters. The viewing angle would be calculated as follows:

$VA = 2 \arctan\left(\frac{2 / 2}{3}\right) \approx 36.87 \text{ degrees}$

So, the viewing angle is approximately 36.87 degrees.

What is a Viewing Angle?

The viewing angle is the angle subtended by the width of the screen at the viewer’s eye. It is an important factor in determining the optimal distance from a screen for the best viewing experience. A larger viewing angle generally means a more immersive experience, but if the angle is too large, it can cause discomfort and require excessive head movement.