Field of View (FOV) Converter

Convert between Horizontal and Vertical Field of View across display aspect ratios.

70.53°

How It Works

  • Applies trigonometric tangent formulas to calculate angular relationships.
Formula & Technical Standard
Horizontal FOV = 2 * arctan(tan(Vertical FOV / 2) * Aspect Ratio)

Practical Example

103 H-FOV on 16:9
Input: 103° Horizontal
Output: 70.53° Vertical FOV
Matches geometry in games using vertical FOV (R6 Siege).

Frequently Asked Questions

Why use Vertical FOV?

Vertical FOV keeps framing constant while ultrawide screens expand horizontally.

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