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

Field of view (°)

Required number in °. Desired field of view in degrees between zero and 180.

Sensor width (mm)

Required number in mm. Width of the sensor or display area covered.

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

Compute the lens focal length needed for a field of view as sensor width / (2·tan(FOV/2)). Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Focal length (mm)

Returned number in mm. Required focal length.

• 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.
• Field of view must be at least 0.
• Field of view must be no greater than 180.
• Sensor width 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.

• FOV From Focal Length VR Calculator

  Compute the field of view covered by a lens as 2·atan(sensor width / (2·focal length)).

• Resolution From Ppd Fov

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

• Field Of View Diagonal

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