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

Drift Millimeters (mm)

Required number in mm.

Observation Minutes (min)

Required number in min.

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

Linear extrapolation of measured position drift to millimetres per hour. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Millimeters Per Hour (mm/h)

Returned number in mm/h.

• 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.
• Drift Millimeters must be at least 0.
• Observation Minutes 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.

• Tracking Jitter Rms

  Three-axis tracking jitter magnitude from per-axis RMS position errors in millimetres.

• Tracking Loss Percentage

  Lost tracking time as a percentage of a measured session duration.

• Chromatic Aberration Correction Calculator

  Compute the radial scale correction that removes measured color channel separation at a reference radius.