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Sim racing calculators

The numbers that decide a rig, worked out properly and shown with the formula so you can check them. 6 tools, none of them pushing you toward one brand's ecosystem.

What these tools cover

A sim rig is a chain of dependent constraints, and almost every expensive mistake in this hobby comes from solving them out of order. The room sets the frame. The frame sets the torque you can mount. The screens and the seating distance set the field of view. The resolution across those screens sets the graphics card. Change one and the rest move with it, which is why guessing at the end of the chain is so costly.

Start with space. The rig space calculator takes your room dimensions and the kind of rig you are considering and tells you whether it fits with the clearances you actually need: room behind the seat to recline, depth in front of the wheel for screens, and a side gap wide enough to get in and out. This is the single most useful page here because it is the question that most often ends a build before it starts.

Then field of view. FOV is set by how much of your vision the screen fills, which means screen width and viewing distance, not diagonal size. The triple monitor FOV calculator returns the angle to enter in the sim, and the monitor size and distance calculator answers the buying-side version: what panel, at what distance. Correct FOV almost always feels too narrow for the first few laps, and drivers who widen it to feel fast lose the depth cues they brake by.

Then torque and money. The wheelbase torque calculator converts a peak newton metre figure into force at the rim and, more usefully, tells you whether your mounting can hold it. The build cost calculator totals a whole rig from real component prices so the number you plan around is the number you pay. The PC spec calculator covers the part people forget: triples and VR multiply pixel count, and the graphics card has to keep up.

Results here are researched guidance, not engineering advice. Direct drive hardware produces real force and rig components carry real weight, so follow the manufacturer's mounting and torque limits. See also the reference charts and the setup guides.

Which calculator answers which question?

Question Calculator What you measure first What it returns
Will the rig fit in my room Rig space calculator Room length and width in inches Total footprint, a fit verdict, and the clearance costing you the space
What field of view should I set Monitor size and distance Panel diagonal and eye to screen distance Horizontal and vertical field of view in degrees
What angle should my triples sit at Triple monitor FOV Panel size, bezel width and seating distance Side panel angle and the in-game FOV to match
What gain should I set on my wheelbase Wheelbase torque Published peak torque and your frame type Gain percentage, working torque, and a mounting verdict
What PC do I need PC spec calculator Display setup, target frame rate and grid size Graphics and processor class, VRAM and memory
What will the whole rig cost Build cost The tier you are building at A component by component total from real prices

Two of these are worth running before you spend anything rather than after. The rig space calculator regularly rules out a frame type entirely, because a built aluminium profile rig frequently will not pass through a standard door and a fixed cockpit with triples wants close to 100 inches of room length. And the wheelbase torque calculator regularly rules out a base, because a frame that reacts 8 Nm cannot use a base rated at 21 however good the price looks.

Every calculator on this site states its formula on the page, so you can check the arithmetic rather than trust it. Where a derived figure and a manufacturer specification disagree, the manufacturer specification governs. For the same numbers as static tables rather than as tools, see the reference charts, and for complete parts lists at three budgets see the complete builds.