simsizing
Calculators for people who build a rig instead of guessing the monitor angle.
Free sim-racing calculators for VR bottlenecks, monitor FOV, quick releases and rig aluminium.
Hardware and bottlenecks
GPU versus headset, quick releases, pedal force and USB power.
Hardware and bottlenecks
GPU vs VR Headset Bottleneck
Compare a GPU performance score and VRAM with a headset’s minimum score, resolution and refresh. Sixteen catalog pairs include a written verdict.
Hardware and bottlenecks
Wheelbase and Wheel Quick Release
See whether two sim-racing quick releases bolt together, need a first-party hub, a third-party adapter, or should not be mixed.
Hardware and bottlenecks
Pedal Load Cell Rig Stiffness
Turn brake force in kilograms and pedal height into newtons, a moment at the deck, and a 4040, 4080, 40120 or 40160 suggestion.
Hardware and bottlenecks
USB Hub Power for a Sim Rig
Add the USB draw of rig peripherals. Above 4.5 W the hub should be powered, and the suggested budget is 1.5 times the sum.
Displays and field of view
Triple angles, ultrawide versus triples, and pixels per degree.
Displays and field of view
Triple Screen FOV and Angle
Screen diagonal, aspect and eye distance give the width, the single-screen FOV, the side-monitor fold angle and the total triple FOV.
Displays and field of view
Ultrawide vs Triple Screen
Compare one ultrawide with three 16:9 panels on width, horizontal pixels and field of view at the same eye distance.
Displays and field of view
VR Pixels per Degree
Divide horizontal and vertical pixels by the headset field of view. A named preset fills the four fields. 60 PPD is the 20/20 reference.
Rig building
Profile cut list, direct-drive torque and seat position.
Rig building
Aluminium Extrusion Cut List
A 180 cm reference cockpit scaled to rider height, rounded to 10 mm: base rails, crossmembers, uprights and pedal rails, plus the total length.
Rig building
Direct Drive Torque and Rig Strain
Wheel torque and rim diameter give the force at the rim and a 4040, 4080, 40120 or 40160 profile suggestion.
Rig building
Sim Seating Position
Rider height and a GT3, F1 or rally preset give seat-back angle, pedal drop, wheel reach and a leg length to the pedals.