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How to Convert PDF to DWG Without AutoCAD
You can convert PDF to DWG without AutoCAD in two free steps: turn the PDF into a DXF file, then save that DXF as DWG with a free batch tool. Nothing about the drawing changes between the two formats, so the extra step costs you a minute and no quality.
Below are three methods that work on Windows and macOS, the settings that matter in each, and the problems that show up after conversion (wrong scale, outlined text, hatching that explodes into lines).
Why does PDF to DWG take two steps without AutoCAD?
DWG is Autodesk’s closed file format. The Open Design Alliance (ODA) reverse-engineered it years ago, and its libraries sit inside BricsCAD, DraftSight and many other programs. Very few free tools write DWG directly.
DXF (Drawing Exchange Format) is the open twin. Autodesk published the specification in 1982, so any program may write it. AutoCAD, AutoCAD LT, BricsCAD, LibreCAD, FreeCAD, SolidWorks and every laser or CNC package read DXF.
So the free method looks like this:
- PDF to DXF with a converter that reads the vector lines in the PDF.
- DXF to DWG with ODA File Converter, or with any CAD program that saves DWG.
Which free methods convert a PDF to DWG?
| Method | Cost | Keeps text editable | Layers | Best for |
|---|---|---|---|---|
| Browser converter + ODA File Converter | Free | Yes, as TEXT | One per line colour | Plans and details you need at true scale |
| Inkscape + ODA File Converter | Free | No, convert text to paths first | Inkscape layers | Logos, outlines, simple shapes |
| BricsCAD PDFIMPORT | Paid, with a trial | Yes | PDF layers or object type | Offices that already own BricsCAD |
| Upload websites | Free tier | Varies | Varies | Drawings with no confidentiality at all |
The upload websites come last for a reason. Architects, engineers and fabricators sign NDAs on most drawing sets, and an upload converter stores your file on someone else’s server.
Method 1: How do you convert in the browser and save as DWG?
This is the fastest free method for real drawings, because the converter sets the scale before export.
- Open the free PDF to DXF converter and drop your PDF in. The file is read on your own computer and never uploaded. The free limit is one PDF of up to 5 pages and 20 MB.
- Pick the page. The converter checks whether it holds vector lines or a scan.
- Click Set scale, click both ends of a dimension you trust (the longest one on the sheet), type its real length and pick the unit.
- Choose the output units (mm for most metric work, inches for US shop drawings) and press Convert to DXF.
- Download ODA File Converter from the Open Design Alliance website. It is free and runs on Windows, macOS and Linux.
- In ODA File Converter, set the input folder to the folder holding your DXF and an empty output folder for the result.
- Set Output version to ACAD2018 for AutoCAD 2018 to 2026, or ACAD2013 for older offices, and Output file type to DWG. Tick Audit so each file is checked and repaired as it loads.
- Start the conversion. The DWG files appear in the output folder with the same names.
The DXF comes out in DXF R12 format with one layer per colour (PDF_000000 for black, PDF_FF0000 for red), text as TEXT entities with the right height and rotation, and curves as polylines. ODA File Converter carries all of that into the DWG.
Got a folder of 40 sheets? ODA File Converter handles the DXF to DWG step for a whole folder in one go. For the PDF to DXF step, the converter’s batch mode takes several PDFs at once into one ZIP with a €12 one-off 24-hour pass, which goes on sale in the coming days.
Method 2: How do you use Inkscape to get from PDF to DWG?
Inkscape is a free vector editor. It opens PDFs and saves DXF, which makes it a decent fallback for shapes and outlines.
- In Inkscape, choose File > Open and pick the PDF. Choose the page in the import dialog.
- Select all text and run Path > Object to Path. Inkscape’s DXF export skips text objects, so unconverted labels simply vanish.
- Choose File > Save As and pick Desktop Cutting Plotter (AutoCAD DXF R14) (*.dxf).
- In the DXF dialog, set the base unit to mm or in to match your drawing.
- Convert the DXF to DWG with ODA File Converter, as in Method 1.
Inkscape has no scale tool for drawings. The result arrives at paper size, and you scale it in your CAD program afterwards. It also turns dimension figures into outlines, so you lose editable text. For a floor plan or a part drawing, Method 1 saves you an hour of cleanup.
What does the DWG look like after conversion?
A vector PDF printed from AutoCAD, Revit, ArchiCAD or SolidWorks converts into clean geometry. Still, four things catch people out.
- Paper size instead of real size. A PDF stores millimetres of paper. An A1 sheet is 841 × 594 mm, so a 1:100 plan arrives 100 times too small. Set the scale during conversion or fix it later; our guide on why a converted PDF is not to scale covers both.
- Text as outlines. When the PDF was made with SHX fonts or with text “converted to curves”, each letter is a bundle of short lines. No converter can turn those back into editable TEXT without character recognition.
- Hatching as hundreds of lines. A hatched wall in the PDF is just many separate lines. Put that layer on its own colour and freeze it, or delete it and re-hatch in CAD.
- Dashed lines as separate dashes. Each dash is its own segment. Redraw long centre lines and hidden lines with a proper linetype.
What if the PDF is a scan?
A scanned PDF holds a photo of the paper, and no free tool turns a photo into clean CAD lines in one click. Check first: zoom in to 800%. Vector lines stay razor sharp, while scanned lines turn blocky. The guide on telling a vector PDF from a scanned one lists four more tests.
For scans, the converter traces the ink into outlines. Each line becomes a thin closed shape (both edges of the ink), so you get something to snap to and redraw over. A scan at 200 dpi gives positions accurate to roughly 0.1 mm on paper, which is fine for redrawing and too rough for manufacturing.
Which DWG version should you choose?
Pick the oldest version that everyone receiving the file can open. That keeps the file readable for subcontractors on older licences.
| Who opens the file | Output version |
|---|---|
| AutoCAD 2018 to 2026 | ACAD2018 |
| AutoCAD 2013 to 2017 | ACAD2013 |
| Unknown or mixed offices | ACAD2010 |
DWG versions change only every few years, so ACAD2018 covers every AutoCAD release since 2018.
When is AutoCAD itself the better choice?
If someone on the team runs AutoCAD or AutoCAD LT 2017 or later, the built-in PDFIMPORT command converts vectors, TrueType text and raster images straight into the open drawing. It works well and saves the DWG step. Before 2017, AutoCAD could not convert a PDF to DWG at all, so older licences need one of the methods above. The guide on importing a PDF into AutoCAD compares PDFIMPORT, PDFATTACH and a converter side by side.
Quick checklist before you send the DWG
- Measure two known dimensions far apart (DIST in AutoCAD, or the measure tool in any viewer). Both must match.
- Switch layers off one by one to see which colour holds walls, dimensions and hatching.
- Delete the title block if the recipient has their own.
- Save in the agreed DWG version and open it once in a free DWG viewer before sending.
Ten minutes of checks beat a fabricator cutting steel at the wrong scale.
Questions people ask
Can I convert PDF to DWG without AutoCAD for free?
Yes. Convert the PDF to DXF in a free tool, then save the DXF as DWG with the free ODA File Converter from the Open Design Alliance. The geometry, layers and text survive the DXF step unchanged.
Why do free converters give DXF and not DWG?
DWG is Autodesk's own closed format, while DXF is the open exchange format Autodesk published in 1982. Any program may write DXF, and every CAD program, AutoCAD included, opens it.
Will the DWG be at the right scale?
Only if you set the scale during conversion. A PDF stores paper size, so a 1:100 plan arrives 100 times too small until you scale it with one known dimension.
Does this work for scanned PDFs?
A scan holds a picture of the paper. A converter can trace the ink into outlines you can snap to, but you still redraw the lines that matter.