Free Online CAD With No Download
You do not need a $2,000 license or a 12 GB install to design a 3D part. Here is how to go from idea to a manufacturable file in your browser — free, no download, in a few minutes.
Why browser-based CAD
Traditional CAD means a heavy desktop install, a license key, and weeks of learning the interface. Browser-based CAD removes all three. PartWork.ai is 100% cloud-based: no software to install, no plugins, nothing saved locally. Open a tab and start designing — your work saves to the cloud in real time.
Describe the part instead of drafting it
The other barrier to CAD is the learning curve. PartWork.ai is AI-powered, so you can describe what you want in plain English and get editable 3D geometry back:
Create a 50 mm cube with a 10 mm hole through the center
Add a 3 mm fillet to all edgesPrefer familiar tools? Sketch, extrude, fillet, and chamfer are all there too — see the Quick Start Guide. Either way, the AI handles the geometry.
Works on any device
Because it runs in the browser, it works on desktop, tablet, and phone — no "lite" version. Start a design on your laptop and pick it up on your phone right where you left off. When you are done, export STL for 3D printing or STEP for CNC.
Try it free, right now
Start with 2 free AI generations — no card required
Guests get 2 free generations saved in the browser — no sign-up needed. Create a free account to keep your work in the cloud (new accounts start with 2 credits; 1 credit = 1 generation). Need more? 100 credits for $4.99 (about 5¢ each). Open the studio.