Professional-grade gear calculation, real-time 2D preview, and production-ready CAD exports — all free, no software to install.
Each gear type has its own tool with the exact parameters and calculations that type demands — not a generic form that half-fits everything.
The most common gear type. Straight teeth, parallel shafts, efficient power transfer. Perfect starting point for most gear train designs.
Angled teeth wrap around the gear cylinder for smoother, quieter operation. Better load distribution than spur gears under high torque.
Conical form for intersecting shafts, typically at 90°. Used to change the direction of rotation in differentials, hand tools, and industrial drives.
High reduction ratios in compact packages. The worm thread meshes with a worm gear wheel — ideal for right-angle drives needing high torque multiplication.
Converts rotary motion to linear. Accurately calculate travel per revolution, total rack length, and tooth geometry for CNC axes, steering, and actuators.
Teeth on the inner circumference of an annular ring. Compact epicyclic arrangements for planetary gearboxes, automatic transmissions, and robotics joints.
Every parameter change instantly re-renders the 2D gear profile in the browser. No "Generate" button, no page reload. Adjust module, teeth count, helix angle, bore diameter — the SVG redraws in milliseconds.
Every export uses the same calculated geometry as the live preview — what you see is exactly what you get.
Resolution-independent vector file of the full gear profile with pitch circle and bore annotations. Use in Inkscape, Illustrator, or any SVG-capable CAD tool.
Industry-standard 2D CAD format compatible with AutoCAD, FreeCAD, LibreCAD, SolidWorks, Fusion 360, and virtually every professional CAD package.
A 2.5D extruded solid mesh built directly from the gear profile. Load it into your slicer and print immediately — no intermediate CAD steps required.
High-resolution raster snapshot of the gear preview for documentation, datasheets, technical reports, and presentations where vectors aren't supported.
Every dimension displayed and exported is computed from first principles using standard gear geometry formulas, not lookup tables or approximations.
Create a free account to keep all your gear designs in one place. Pick up exactly where you left off, on any device.
Give any gear a name and save it with one click. All parameters are stored — reload and the full preview rehydrates instantly.
All saved designs listed by gear type with creation date. Open any design directly in its tool or delete ones you no longer need.
Each saved design has a unique URL you can bookmark or share. Anyone with the link and an account can load the exact configuration.
Everything runs in standard web technologies. No plugins, no Java applets, no desktop software required.
Pick a gear type and start building — no account needed to preview and export.