Convert a PDF floor plan to DXF/DWG: methods and tools
Get a CAD-ready plan from a PDF — without redrawing it. Classic vectorization vs AI detection, complete workflow and AutoCAD integration.
A plan received as a PDF — or worse, a scan — is unusable in CAD: you can't edit walls, measure cleanly or build on the base plan. The usual fix, redrawing the plan in AutoCAD, costs 2 to 6 hours per storey. Classic PDF→DXF converters promise to avoid that, but they vectorize strokes, not walls: the result is a soup of thousands of segments with no layers and no semantics. The AI approach changes the game: it recognizes architectural objects (walls, doors, windows, rooms) and rebuilds a clean DXF file, organized by layers, at real scale. This guide compares the methods and details the full workflow, from PDF to AutoCAD, Allplan or ArchiCAD.
Why classic vectorization fails on floor plans
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AI detection: objects, not strokes
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The complete workflow: from PDF to AutoCAD, Allplan or ArchiCAD
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Frequently asked questions
Can you convert a scanned plan (image) to DXF?
Yes — it's actually where AI makes the biggest difference. Detection works on the plan image: a scan, a photo or an old digitized paper plan yields the same semantic, layered DXF as a vector PDF. One legible dimension is enough to calibrate the scale in real meters.
DXF or DWG: what's the difference for AutoCAD?
DWG is Autodesk's proprietary format, DXF its open exchange format — AutoCAD opens both natively and converts one to the other with a save-as. A clean, layered DXF is therefore directly usable, and compatible with Allplan, ArchiCAD, BricsCAD and most CAD software.
Is the generated DXF at real scale?
Yes: geometries are exported in meters ($INSUNITS=6), calibrated to the detected or entered scale. A 3.50 m partition on the plan measures 3.50 units in AutoCAD — DIST and AREA commands return real values directly, no manual rescaling.
Do you need to redraw the plan if the PDF is low quality?
Rarely. AI detection tolerates noise, thin strokes and hatching; if a few elements are missed, you add them in the validation editor in a few clicks rather than redrawing everything. The practical threshold: if walls are discernible by eye on the plan, the AI generally detects them too.
Convert your first PDF plan to DXF
Import a plan — even scanned — and download a clean layered DXF in 30 seconds. Free, no credit card.
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