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

Processing Milliseconds (ms)

Required number in ms.

Transport Milliseconds (ms)

Required number in ms.

Actuator Onset 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 haptic latency from command processing, transport, and actuator onset. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Latency 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.
• Processing Milliseconds must be at least 0.
• Transport Milliseconds must be at least 0.
• Actuator Onset 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.

• Controller Latency

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

• Eye Tracking Latency Ms

  Serial eye-tracking latency from exposure, gaze inference, and output transport.

• Motion To Photon Latency

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