How to measure eye-to-screen distance
A ten-millimetre change can move a typical result by about 1.5 degrees from the near edge of the band to the far edge. Make the distance defensible first.
FOV setup / six guides
Get from rig measurements to the right game setting.
Measure your screen and seating position, identify the angle your game expects, and avoid common single, curved, and triple-screen mistakes.
iRacing FOV calculator and triple settings
For a single display, map the physical horizontal span. For native triples, map the full visible envelope across all three projections—not the center panel alone.
ACC FOV calculator: the vertical convention
ACC’s single-display field is treated as vertical FOV. Its triple story changed: a historical stretched-span answer now sits beside a distinct Triple Screen rendering mode.
Triple-monitor angle and bezels, as geometry
Angle locates the side panels; bezels remove visible continuity at the seams. Treat both as measured geometry, not decorative corrections.
49-inch ultrawide FOV: chord, curve, and distance
A 49-inch label and 32:9 ratio establish a nominal chord. Curvature then moves the edges toward the eye, making the physical span wider than the flat baseline.
Why FOV calculators disagree
Two calculators can use correct trigonometry and return different numbers because they answer different questions. Audit the quantity before judging the arithmetic.