Free · in your browser · no sign-up
A free wind tunnel, right in your browser.
Draw a shape, pick one of 79 ready-made ones, or drop in a photo, and watch real airflow around it with live drag and lift. It runs on your own graphics chip, so it is fast and nothing is uploaded.
Free means free
What you can do without paying.
- SHAPES
79 shapes and a brush
Cars, wings, hulls, balls, bikes and buildings, or paint your own straight into the flow.
- IMPORT
Photos and sketches
Drop in a photo or a drawing and WindCanvas traces its outline into the tunnel.
- FLOW
Smoke and colour maps
Speed, pressure and vorticity, updated every frame while you change the wind.
- NUMBERS
Drag and lift, live
Coefficients, pressure along the surface, plain-language suggestions and a printable report (watermarked in the free version).
The free version runs the 2D tunnel at Low and Medium resolution and 3D at Low. Your work autosaves in the browser. A licence adds every resolution, 3D models and drawings, and project files.
Questions
Good to know.
Is it really free?
Yes, with no time limit, no account and no ads in the app. A licence unlocks higher resolution, more import formats and project files if you want them later.
Does it work on a Mac, a tablet or a phone?
Yes: it runs in any recent Chrome, Edge or Firefox with WebGL2, including on a Mac, and in Safari on iPhone and iPad and Chrome on Android. Phones start in battery-saving mode; turn yours sideways for the biggest tunnel, and add it to your home screen to open it like an app, even offline. The check above tells you whether this browser has what it needs.
Can I use it offline?
The Windows app runs fully offline. The browser version needs a connection to open; once it is running, it doesn’t use the network.
Where is my work saved?
In your browser’s own storage on this computer. Nothing is sent to us. Clearing your browser data clears the autosave.