How to turn a scanned or hand-drawn floor plan into 3D

Updated 13 July 20266 min read

Not every plan starts as a clean CAD file. Often it's a scan of an old blueprint, a phone photo, or a rough hand sketch. AI detection can still turn these into a 3D model and CAD files — it reads the walls and rooms from the lines, rebuilds them, and lets you fix anything it misreads in an editor before you export.

Why scans and sketches are trickier

A scan or photo is a raster image (see image to CAD), and it usually adds real-world mess: skew, shadows, faint lines, handwriting, or a slightly warped page. The geometry is still in there — it just needs to be reconstructed and cleaned up.

The workflow

Upload the scan, photo, or hand-drawn plan.
Detection reads the walls, rooms, doors, and windows it can find.
Refine in the browser — auto-correction straightens skewed walls and closes gaps, and you fix anything the detector missed.
Set the scale from a known dimension.
Export a clean 3D model, CAD (DXF/DWG), or renders. It's the same 2D-to-3D pipeline, just starting from messier input.

Rescue an old plan into clean 3D

Upload a scan, photo, or sketch and get editable geometry, CAD files, and 3D models — fixable in the browser.

Get early access →

Tips for cleaner conversion

Scan flat and straight-on. A flatbed scan or a level, well-lit photo beats an angled snapshot.
Boost contrast. Darken faint lines and remove shadows before uploading if you can.
Include a dimension. A single known measurement locks the scale.
Expect to touch up openings. Doors and windows are where rough scans most need a quick fix.

Frequently asked questions

Can AI convert a hand-drawn floor plan to 3D?

Yes, if the drawing is clear enough to read. AI detects walls and rooms from the lines and rebuilds them in 3D; anything it misreads on a rough sketch you correct in the editor before exporting.

Does the scan need to be high quality?

Cleaner is better. A flat, high-contrast, straight-on scan converts far more accurately than a blurry photo taken at an angle. The editor is there to fix whatever the detector gets wrong on lower-quality input.

What can I export from a scanned plan?

Once the plan is reconstructed you can export the same outputs as any other model — CAD (DXF/DWG), 3D files (OBJ, glTF, .blend), and furnished renders.

Will measurements be accurate from a scan?

Set the scale from a known dimension in the plan and the measurements will be true to life. Without a reference, the model is proportionally correct but not tied to real units.