Use this virtual-reality calculation for a first-order display, optics, tracking, rendering, or latency estimate when all stages and units are explicitly defined.

Horizontal FOV (°)

Required number in °. Horizontal field of view in degrees.

Aspect ratio

Required number. Display width divided by height.

The cited overview of Field of view supplies background for the terminology and domain context used by this tool.^[1]

Convert a horizontal field of view and aspect ratio into the vertical field of view of a headset display. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Vertical FOV (°)

Returned number in °. Vertical field of view in degrees.

• Lens calibration, per-eye geometry, display scanout, asynchronous pipelines, tracking filters, workload variation, user anatomy, and device firmware can make measured VR behavior differ from a serial model.
• Horizontal FOV must be at least 0.
• Horizontal FOV must be no greater than 180.
• Aspect ratio must be at least 0.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Validate the estimate on the target headset with calibrated motion, optical, frame-timing, and latency measurements under a representative workload.

• Horizontal Field of View Calculator

  Convert a vertical field of view and aspect ratio into the horizontal field of view of a headset display.

• Field Of View Diagonal

  Diagonal field-of-view angle for a rectangular symmetric frustum from horizontal and vertical full angles.

• Resolution From Ppd Fov

  Minimum integer horizontal pixel count for a target nominal pixels-per-degree and horizontal field of view.