NEW / FEATURED CAD APPLICATION

Parametric parts, built in the browser.

Design editable parts and assemblies locally with precise browser-based CAD tools. Free and open-source, built for the work before fabrication.

Open PartMode

PartMode showing a parametric plate with a hole, feature history, and editable dimensions

CADCOLABS / FIELD REFERENCE

Practical geometry before it becomes shop time.

Free CAD tools and engineering reference for drafting, fabrication, machining, and construction coordination. Built to make preliminary work clearer, not to replace judgment, local requirements, or a licensed professional.

Browse the tool catalog

NEW / FEATURED CAD APPLICATION

Model a building in 3D.

Sketch walls, floors, and roofs, place doors and windows, and inspect the model directly in your browser. Free and open-source, built with WebGPU.

Launch Pascal Editor

Pascal Editor showing the 3D building workspace with its structure toolbar and viewer controls

FEATURED CAD APPLICATION

Design a spiral stair in 3D.

Adjust stair geometry, run preliminary FBC checks, generate the model, and inspect it directly in your browser.

Launch Spiral Designer

Spiral Stair Designer showing adjustable geometry, a compliant FBC result, and a generated 3D staircase

CONFIGURATORS / TOOLS / CALCULATORS

Structural & Geometry Drafting & Layout Machining File Utilities

WORKSPACE POLICY

Results will be preliminary by design.

Each tool states its formulas, assumptions, units, and limits beside its result. None claims code compliance, file conversion, or professional approval.

Pinned & recent tools

Open a calculator to build browser-local history. Nothing is sent off this device.