Sim Racing FOV Calculator
Find the correct sim racing FOV for your monitor or triple-screen rig using screen diagonal, aspect ratio, and eye-to-screen distance. This racing sim FOV calculator gives you a geometry-matched horizontal FOV so iRacing, ACC, and other titles feel proportionally accurate instead of artificially wide.
Sim Racing FOV Calculator
Set screen size, aspect ratio, viewing distance, and triple-screen or curved monitor options to calculate geometry-matched FOV values by axis. Use a game profile only where its documented instructions match your setup.
Core FOV Results
Geometry-based values from your screen size and viewing distance. Apply only the axis documented by your game and verify its current display settings.
Current vs saved setup
Saved setup loaded. Change screen size, distance, or monitor options above to see differences.
Current
Saved
| FOV value | Current | Saved |
|---|---|---|
FOV Values by Axis
Use the value that matches the FOV axis documented by your game. Verify the game’s current setting behavior before applying it.
| FOV value | Value |
|---|---|
Enter Screen Size and Viewing Distance
Sim FOV depends on how large your screen appears from your eyes, not on preference alone. Measure the diagonal of your primary monitor in inches, select the correct aspect ratio, and enter viewing distance in centimeters from your eyes to the screen center.
The calculator derives physical screen width and height, then applies the same arctangent formula used in optics. For triple-monitor setups, add bezel width so per-monitor and total horizontal FOV reflect the real gap between panels.
iRacing FOV Setup
For a triple-monitor rig, use iRacing's own Field of View Calculator in Settings > Display > Monitor after entering your physical monitor setup. iRacing's official instructions specify selecting 3 Flat Screens or 3 Curved Screens, measuring monitor width edge-to-edge including bezels, entering bezel width for one edge, and entering the viewing distance from your eyes to the center monitor.
Click Compute after entering those measurements. When using Render scene using 3 projections, also enter the physical angle between the center and side screens; use radius of curvature instead of an angle for curved monitors. This workflow is documented by iRacing Support. Recompute whenever monitor placement or seating position changes.
ACC and Assetto Corsa FOV
Assetto Corsa Competizione uses vertical FOV internally, so you may need our vertical FOV converter to translate the horizontal result from this page. An assetto corsa fov calculator approach starts with horizontal geometry here, then converts to vertical using your aspect ratio before entering ACC.
For acc fov calculator workflows, many drivers set the in-game FOV slider to the converted vertical value and disable any additional wide-angle effects. The fov calculator acc community often recommends locking camera offset separately so seat position does not distort perceived scale.
Single Monitor vs Triple Screen FOV
A single monitor produces one horizontal FOV arc. Triple screens add side panels that wrap peripheral vision, so total horizontal FOV can exceed 180° even though each panel stays near 60°. Account for bezel width, thick bezels reduce usable wrap and change the effective angle.
Per-monitor FOV should remain consistent across all three panels when they are identical. If your center screen is larger or closer, calculate it independently before averaging side angles for a symmetric wrap.
Why Correct FOV Matters in Racing Sims
Correct FOV aligns virtual speed and corner apexes with what your eyes expect from real driving. Too wide makes the car feel slow and turns look sharper than they are; too narrow feels like telephoto magnification and encourages late braking. Geometry-matched FOV improves consistency lap after lap.
Competitive sim racers treat FOV as a fixed calibration step alongside force-feedback gain. Once set from measured distance, only change it when hardware changes and not to chase leaderboard trends.
Game-Specific FOV Notes
Different titles expose different FOV axes. Some flight and rally games use horizontal FOV; others like ACC use vertical. An arma 3 fov calculator or general fov game tool may also offer degree sliders without explaining the axis so always confirm whether the in-game number is horizontal or vertical before typing it in.
Return to the main FOV calculator for generic angle math, or use the vertical converter when a game manual specifies a different axis than your measurement.
Frequently Asked Questions
Use the FOV this calculator outputs for your exact screen size and eye distance. Most 27-inch 16:9 setups at 60 cm land near 58° horizontal. Do not copy forum values from different monitors. Measure your own distance for accurate sim racing FOV.
For a triple-monitor rig, configure the physical measurements in iRacing's own Field of View Calculator: monitor type, monitor width including bezels, bezel width, and eye-to-center-monitor distance. Click Compute after entering those measurements, then repeat it whenever you move the seat or monitors.
Higher FOV is not automatically better. Wider angles show more cockpit and track edges but shrink the scene and distort depth. The best FOV matches your real-world view of the monitor so braking points and apexes stay trustworthy.
Each monitor has its own horizontal FOV based on width and distance. Total wrap adds the side panels minus bezel gaps. Use the triple setup option, enter bezel width in millimeters, and apply per-monitor FOV in games that support multi-screen rendering.