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

Angular Velocity Degrees Per Second (deg/s)

Required number in deg/s.

Latency Milliseconds (ms)

Required number in ms.

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

Approximate angular pose correction from angular velocity times late-update latency. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Correction Degrees (deg)

Returned number in deg.

• 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.
• Latency Milliseconds 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.

• Motion To Photon Latency

  Serial motion-to-photon estimate from sensing, pose processing, rendering, compositing, scanout and pixel response.

• Prediction Latency

  Prediction horizon in milliseconds from pose-measurement timestamp to target display timestamp on the same clock.

• Reprojection Error Pixels

  Approximate horizontal reprojection error in pixels from signed angular error and nominal pixels per degree.