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

Tracking Milliseconds (ms)

Required number in ms.

Render Milliseconds (ms)

Required number in ms.

Display 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]

Serial latency estimate from tracking, rendering and display stages; excludes unmodelled parallel overlap. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Total Milliseconds (ms)

Returned number in ms.

• 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.
• Tracking Milliseconds must be at least 0.
• Render Milliseconds must be at least 0.
• Display 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.

• Render Latency

  Serial render latency from CPU preparation plus GPU rendering; does not model pipelined overlap.

• Controller Latency

  Serial controller input latency from scan, transport, and processing stages.