Sim Racing FOV Calculator
Geometrically Correct
Field of View
Sim racing FOV isn’t a preference — it’s geometry. There is one correct value for your screen size and seating distance, the one that renders the track at true 1:1 scale. Get it right and braking points, closing speed and apex judgement all become readable. This calculator finds it, then converts it for every major sim.
1:1
True
Scale
12
Sims
Covered
Triple
Screen
Support
– CALCULATOR
Sim Racing FOV Calculator
Measure your eye-to-screen distance with a tape measure while seated in your driving position — it’s the single biggest factor in the result. Enter your screen details and the calculator returns the correct value for every major sim.
Total gap between two panels is roughly double this figure.
Measure from your eyes to the centre of the screen while seated in your driving position. Most sim racers sit 50–100cm away.
Enter your screen size, aspect ratio and seating distance, then calculate.
– Quick Explainer
Why Sim Racing FOV Isn’t a Preference
In a shooter, field of view is a trade-off you tune to taste. In sim racing it isn’t. Your monitor is a window into the virtual world, and there is exactly one camera angle that makes what’s on the glass line up with reality — the angle your screen physically subtends at your eye.
Set it correctly and the track renders at true 1:1 scale. A car two lengths ahead looks two lengths ahead. A braking board arrives at the rate your brain expects. Corner entry speed becomes something you can judge rather than guess.
Set it too wide — which nearly everyone does, chasing a sense of speed — and the world compresses. Distances read as shorter than they are, closing rate looks wrong, and your braking references never settle because they’re arriving at a rate that doesn’t match any physical intuition you have. The sensation of speed goes up. Your lap time goes up too.
The maths is straightforward: FOV = 2 × arctan( (screen dimension ÷ 2) ÷ viewing distance ). Horizontal FOV uses your screen’s width, vertical uses its height. That’s the whole thing — no preference involved.
– How to Use
Four Steps to Correct FOV
01
Measure Your Distance
Tape measure, eyes to screen centre, seated in your driving position. Don’t estimate.
02
Enter Your Screen
Diagonal in inches plus aspect ratio. Single, triple or one stretched image.
03
Find Your Sim
Each title wants a different axis. Copy the row that matches your game, not the headline.
04
Drive Before Judging
It will feel zoomed in at first. Give it several sessions before deciding.
– Reference Data
Correct FOV by Screen Size and Distance
| Screen (16:9) | 50 cm | 60 cm | 70 cm | 80 cm |
|---|---|---|---|---|
| 24″ | 56h / 33v | 48h / 28v | 42h / 24v | 37h / 21v |
| 27″ | 62h / 37v | 53h / 31v | 46h / 27v | 41h / 24v |
| 32″ | 71h / 43v | 61h / 37v | 54h / 32v | 48h / 28v |
| 34″ | 74h / 46v | 64h / 39v | 57h / 34v | 50h / 30v |
| 43″ | 87h / 56v | 77h / 48v | 68h / 42v | 62h / 37v |
Read down a column and the pattern is obvious: distance dominates. A 27-inch screen at 50cm needs 62° horizontal; the same screen at 80cm needs 41°. That’s why measuring properly matters more than anything else on this page — a 10cm error in your tape measure moves the answer more than swapping monitors would.
– Myth Check
“The Correct FOV Feels Way Too Zoomed In”
This is the most common reaction, and it’s worth taking seriously rather than dismissing — because the feeling is real, even though the number is right.
Why it feels narrow: a single monitor physically cannot give you peripheral vision. In a real car you see the mirrors, the door card and the apex out of the corner of your eye. On one screen all of that has to fit into a rectangle in front of you. Correct FOV doesn’t remove your peripheral vision — you never had any.
What widening it actually costs: you don’t gain peripheral vision by cranking FOV — you shrink everything and distort the edges. The extra scenery arrives at the price of accurate distance perception, which is the one thing that actually finds lap time.
The honest compromise: drive several full sessions before judging — braking points and closing speed sharpen noticeably once your brain recalibrates. If you genuinely can’t live with it, widen it a few degrees knowingly rather than doubling it. And if you want a wider view for real, move the screen closer or buy a bigger one. Both raise the correct FOV legitimately.
– Triple Screens
Triple Monitor Setup
Triples are where most people get confused, because the number you enter depends on whether your sim renders three separate cameras or stretches one image.
Native triple rendering
iRacing, Automobilista 2 and others render three separate camera views. Enter the per-screen value — the same figure you’d use for a single monitor of that size. The big combined number is the arc your eyes cover, not something to type into the game.
One stretched image
Euro/American Truck Simulator, or any sim run through Surround/Eyefinity without native triple support, sees one very wide display. That takes the combined figure across all three panels including bezels.
Side monitor angle. There’s a neat result hiding in the geometry: the angle you should rotate each side monitor inward is exactly equal to a single screen’s horizontal FOV. Rotating each panel by its own angular width is precisely what makes the arc continuous, so the two numbers are always the same. The calculator shows it for you.
Vertical FOV doesn’t change. Adding screens side by side widens your view horizontally and does nothing vertically. So in vertical-FOV sims like Assetto Corsa, ACC or Le Mans Ultimate, a triple setup uses the same vertical value as a single screen of the same size. That surprises people, but it’s simply what the geometry says.
– Per-Sim Reference
Which Value Does Your Sim Want?
| Simulator | Uses | Where to find it |
|---|---|---|
| iRacing | Horizontal | Graphics options, or app.ini |
| Automobilista 2 | Horizontal | Camera settings |
| Project CARS 1 / 2 | Horizontal | Camera settings |
| Euro / American Truck Sim | Horizontal | Takes combined width on triples |
| Assetto Corsa | Vertical | Settings > View > Field of View |
| Assetto Corsa Competizione | Vertical | Settings > Graphics > FOV |
| rFactor 2 / AMS / GSC | Vertical | ISI-engine camera settings |
| Le Mans Ultimate | Vertical | Camera settings |
| BeamNG.drive | Vertical * | Slider is labelled “horizontal” but behaves as vertical |
| F1 23 / 24 / 25 | 2 × Vertical | EGO engine doubles the value internally |
| DiRT Rally 1 / 2 / GRID | 2 × Vertical | EGO engine |
| EA Sports WRC | 2 × Vertical | EGO engine |
| Richard Burns Rally | Vertical, radians | Config file, not degrees |
This table is the reason a single “correct FOV” number is useless on its own. The same physical setup produces 53° for iRacing, 31° for ACC and 63° for F1 25 — all describing the identical view, just expressed differently. The calculator outputs every one so you don’t have to convert by hand.
One deliberate omission: RaceRoom Racing Experience. Reputable sources disagree on whether it takes horizontal or vertical FOV, and we’d rather leave it out than publish a figure that might be wrong. If you race RaceRoom, set your FOV using an in-game visual reference and verify before trusting any calculator’s number for it.
– Informational
Getting It Right in Practice
Eye height matters too
Correct FOV assumes your eyes sit at the vertical midpoint of the screen. If your monitor is mounted high on a wall or stand, the geometry still holds but your view is skewed — you’ll be looking up at the horizon. Fix the physical mounting first if you can. Where you can’t, most sims offer a seat position or FOV offset adjustment to shift the view without changing the angle.
Set seat position separately
FOV and seat position are different controls solving different problems. FOV sets the camera angle; seat position moves where the camera sits in the car. Get FOV right first from the geometry, then adjust seat position so the wheel, mirrors and dash sit where you want them. In ACC, for example, leave the FOV offset slider at zero initially and use the seat adjustment instead.
Curved monitors
A curved screen’s projected width is very slightly less than its flat width, so the strictly correct FOV is marginally narrower than this calculator returns. On typical 1800R and 1000R panels the difference is under a degree — smaller than the error in most people’s tape measure. Use the flat figure and don’t lose sleep over it.
Common mistakes
Guessing your viewing distance instead of measuring it — this is the big one, and it dominates the result. Entering a horizontal value into a vertical-FOV sim, which produces a wildly zoomed-out view. Forgetting the F1 and DiRT titles double the number. Copying a streamer’s FOV, which is meaningless unless you share their exact screen and seating position. And widening the FOV to chase a sensation of speed, which trades away the distance perception that actually makes you quicker.
– FAQ
Common questions about sim racing FOV.
Measurement, triples, per-sim differences and why correct always feels narrow.
There’s no universal number — it depends entirely on your screen size and how far you sit from it. The formula is FOV = 2 × arctan((screen dimension ÷ 2) ÷ viewing distance). A 27-inch 16:9 monitor at 60cm gives 53° horizontal and 31° vertical.
Because a single monitor can’t give you peripheral vision, and true scale doesn’t pretend otherwise. Widening the FOV doesn’t add peripheral vision — it shrinks everything and distorts the edges. Drive several sessions before judging; braking points and closing speed sharpen once your brain recalibrates.
It makes you more consistent, which usually shows up as pace. When the world renders at true scale, distances and closing speeds match your real-world intuition, so braking points become repeatable rather than guessed. A wide FOV compresses distance, which is why braking references never quite settle.
No — the same physical setup produces different numbers. iRacing takes horizontal FOV, Assetto Corsa and ACC take vertical. For a 27-inch screen at 60cm that’s 53° in iRacing and 31° in ACC. Both describe the identical view; they just measure a different axis.
Sims with native triple rendering (iRacing, AMS2) take the per-screen value — the same number as a single monitor that size. Only setups stretching one image across all three, like Euro Truck Simulator or Surround without native support, use the combined figure. Angle each side monitor inward by the single-screen horizontal FOV.
Codemasters’ EGO engine treats the FOV input as half the actual camera angle, so titles built on it — the F1 series, DiRT Rally, GRID and EA Sports WRC — need twice your vertical FOV entered. The calculator does that conversion and shows the figure you should actually type in.
Barely. A curved panel’s projected width is fractionally less than its flat width, so the strictly correct FOV is marginally narrower. On typical 1800R and 1000R screens the difference is under a degree — less than the error in most tape-measure readings. Use the flat figure.
From your eyes to the centre of the screen surface, seated in your normal driving position. Use a tape measure rather than estimating or using your arm — distance is the single biggest factor in the result, and a 10cm error shifts the answer more than changing monitor size would.
FOV first, from the geometry. Then adjust seat position so the wheel, mirrors and dash sit where you want them. They solve different problems — FOV sets the camera angle, seat position moves the camera within the car. In ACC specifically, leave the FOV offset slider at zero and use the seat adjustment instead.
No. Their number is correct for their screen size and seating distance, and meaningless for yours. This is the one FPS habit that transfers worst to sim racing — there’s no “pro setting” to copy, only your own geometry. Measure your rig and use the value it produces.
This calculator doesn’t apply. VR headsets have a fixed optical field of view set by the hardware, and the sim renders to match it automatically — there’s nothing to calculate and usually nothing to adjust. VR gives you true scale and real peripheral vision by default, which is why it sidesteps this whole problem.
– RELATED TOOL