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. The table below converts that geometry into the axis each documented title expects: horizontal for iRacing, vertical for ACC, Assetto Corsa, AMS2, rFactor 2, and LMU, 2× vertical for current EA F1, and radians for Richard Burns Rally.
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
| Game / setting | Current | Saved |
|---|---|---|
FOV values by game
Each row is the same geometry converted to the axis or unit that title documents. Confirm the current in-game setting before applying it. Forza, Gran Turismo, and other unitless sliders are undocumented, so use the core horizontal or vertical value only.
| Game / setting | Value to enter |
|---|---|
Compare your in-game FOV
Enter the FOV shown in your game to check if it is too wide or too narrow versus geometry.
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.
How to Set FOV by Game
Read the core horizontal and vertical values first, then use the matching row in the game table. iRacing, Project CARS, and Euro Truck Simulator 2 / ATS take per-monitor horizontal FOV. Assetto Corsa Competizione, Assetto Corsa, Automobilista 2, rFactor 2, Le Mans Ultimate, and RaceRoom take per-monitor vertical FOV. Current EA F1, DiRT Rally 2.0, and EA Sports WRC expect twice the vertical value. Richard Burns Rally expects horizontal FOV in radians.
iRacing also has a built-in Field of View Calculator in Settings > Display. Use our horizontal value as a geometry check, then follow iRacing Support for triples. Forza, Gran Turismo, and other unitless sliders are undocumented here, so enter the core horizontal or vertical number only if the manual names that axis. FPS titles such as Tarkov or Battlefield belong on the vertical FOV converter, not this rig-geometry table.
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. The ACC row in the table is already that vertical value, so you do not need a second conversion unless you are changing aspect ratio. Use the vertical FOV converter when you need Hor+ behavior on an ultrawide. An assetto corsa fov calculator workflow is the same: enter the vertical number from this page.
Le Mans Ultimate and rFactor 2 also use vertical FOV. For acc fov calculator or fov calculator lmu searches, lock camera offset separately so seat position does not distort perceived scale after you set FOV.
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 fps fov tool is an aspect-ratio conversion, not monitor geometry — use the vertical converter for those engines.
Return to the main FOV calculator for the same screen tool plus the lens tab, 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 53° 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. This page's iRacing row is the geometry-matched per-monitor horizontal FOV you can use as a check. Click Compute in iRacing 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.