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Engineering on Web CAD
Free · no install · no sign-up

Design your parts in 3D right in the browser

Draw the part, put the assembly together and produce the technical drawing — with nothing to install. When you are done, export it to your 3D printer, your laser cutter or another CAD program.

Start creating now See how it works
  • 100%in the browser
  • Freeno sign-up
  • 3-in-1part, assembly and drawing
  • 10languages
Screenshot of Engineering on Web CAD showing a base plate with a hexagonal hole and the list of build steps on the left
Constrained sketching
Change a size, it rebuilds itself
AI assistant
Works with what you already use via STL, STEP, IGES and DXF
Workflow

From sketch to finished part in three steps

A clear path from the first line to the finished part, without the hard start.

  1. 1

    Sketch in 2D

    Lines, arcs, circles and curves that snap to the right points on their own. Type the sizes and the drawing follows — change 30 to 45 and everything moves with it.

  2. 2

    Add volume in 3D

    Pull the sketch up, spin it around an axis or sweep it along a path. Then add holes in standard sizes, rounded corners, thin walls and repeats.

  3. 3

    Assemble, document and make it

    Put the parts together, lay out the views and dimensions of the drawing, and export: STL for the 3D printer, DXF for the laser, STEP or IGES for other programs.

Simple and powerful

Everything you need to create in 3D

Made for students, makers, woodworkers, designers and anyone who 3D prints.

Precise 2D sketching

Draw to size from the start. Say what should stay parallel, equal or the same length and the drawing keeps it that way on its own.

Everything stays editable

Every step is kept in a list. Go back to any of them, change a size and the whole part is rebuilt — no starting over.

AI assistant

Describe the part by text or voice and the assistant creates the features. Ask about tools without leaving the model.

Multi-part assemblies

Fit the parts together, check what clashes or has clearance, open the exploded view, record the assembly animation as video and get the bill of materials ready.

Technical drawings on a sheet

Front, top and side views, sections, zoomed details and dimensions on an A4 or A3 sheet with the title block filled in. Export as PDF (print), SVG or DXF.

Your projects, your data

Everything is computed on your own computer and projects stay in your browser. Save versions, compare them and download the whole project as one file whenever you want.

Professional tools

Things you would expect only in paid software

Professional organization: toolbar, build-step list, floating cards and keyboard shortcuts.

Mass properties

Volume, area, mass and center of mass per material.

Section view

Live cutting plane to inspect the inside.

Interference and clearance

Detects body clashes before manufacturing.

Exploded view and animation

Move the parts apart step by step and record it as video.

Variables and expressions

Fields accept =#width*2, units and conditionals.

Configurations

Parametric variants of the same part in a table.

Versions and compare

Named snapshots and visual diff between versions.

Measurements and PMI

Distances, angles, areas and 3D annotations on the model.

Render and analysis

PBR materials, zebra, curvature and draft analysis.

Command search

Ctrl+K finds any tool, view or operation.

Import DXF and images

Bring in an existing drawing, or trace over a photo.

Weight, cost and CO₂

Pick the material and see weight, price and carbon footprint.

Try all the tools
AI assistant

Talk to your CAD

The assistant understands what you want to build and runs the features for you. Works by text or voice.

  • Modeling by command"Create a 50 mm box with four M6 holes in the corners."
  • VoiceDictate operations while keeping your hands on the mouse.
  • Computer visionVectorize a photographed sketch or read dimensions off a drawing.
  • Contextual helpAsk how to use a tool and get the answer inside the model.
Full compatibility

Open and export industry formats

Works with 3D printers, laser cutters, CNC and any other CAD program.

Industry Standard

STEP (.stp, .step)

Universal engineering format. Open and save 3D models compatible with any CAD program.

Import and export
3D Surfaces

IGES (.igs, .iges)

Ideal for sharing 3D surface models between different design software seamlessly.

Import and export
3D Printing

STL (.stl)

Export high-resolution models ready for 3D slicers like Cura, PrusaSlicer, and Bambu Studio.

Export
Laser Cut & CNC

DXF (.dxf)

Perfect for 2D laser cutting, acrylic, MDF, sheet metal, and CNC routing projects.

Import and export
Full Precision

BREP (.brep)

Save your models with exact geometric topology and mathematical precision.

Import and export
Editable Project

Complete project (.json)

Parts, assemblies, drawings and versions in a single file — to keep, to carry to another computer, or to pick up later.

Import and export
New · from the same team

Engineering on Web FEA: simulate your parts with finite elements

Take your Engineering on Web CAD part into Engineering on Web FEA, our multiphysics simulator in the browser: stresses and strains, heat, fluid flow and electromagnetics, checked against analytical solutions. Export as STL or STEP and simulate.

  • Structures
  • Heat
  • Fluids (CFD)
  • Electromagnetics
  • Multiphysics
Discover Engineering on Web FEA Open the simulator
GOT QUESTIONS?

Frequently Asked Questions

Everything you need to know to get started.

Do I need to install software or create an account?

No. Engineering on Web CAD runs directly in the browser (recent Chrome, Edge, Firefox or Safari). No installer, no account.

Are my files and design projects saved online?

By default projects stay in your own browser. You can download the complete project (or STEP and STL) at any time and keep it wherever you like.

How is the modeler organized?

The path is direct: a 2D sketch with dimensions, steps kept in a parametric list you can edit at any time, assemblies, technical drawings, variables and variants of the same part.

Can I put assemblies together and produce technical drawings?

Yes. The assembly tab joins the parts of the project with joints (rigid, a shaft that turns, a rail that slides and others), shows the exploded view, animates the assembly as video and builds the bill of materials. The drawing tab lays out views, sections, details and dimensions on an A4 or A3 sheet, ready to print or to export as SVG and DXF.

How does the AI Assistant help me design?

You can type or speak commands (e.g. "create a 50mm box with holes") and AI builds it for you automatically.

Can I export models for 3D Printing or Laser Cutting?

Yes! Export STL files for 3D printers and DXF files for laser cutters or CNC machines.

Does it work on phones or tablets?

It works on tablets with a current browser, but the full experience is meant for a computer with a mouse. The first time you open it, the geometry engine (about 50 MB) is downloaded and then kept for next time.

Ready to Bring Your 3D Ideas to Life?

Open it and start drawing. It is free, with nothing to install and no account to create.

Start creating now