Browser-based conversion
Use the converter without installing desktop software to move from DXF to DWG.
Free under 5 MBDXF → DWGNo software installation
Convert DXF
to DWG online
Convert a DXF (.dxf) drawing into DWG (.dwg) for native AutoCAD editing and production drawing workflows. Upload the file directly in your browser without installing AutoCAD or another desktop converter.
Encrypted uploads Files up to 300 MB Deleted after 7 days
Upload your DXF file
Choose one file to begin the conversion.
Drag and drop your 3D file here
or choose a file from your computer
Browse filesMaximum file size: 300 MB
Files under 5 MB convert and download free. Larger files require a small fee per conversion, including a new file or re-run.
Don't have a file? Try a sample:
Built for 2d cad drawing
Translate 2d entities, layers and annotations into the 2d entities, layers and annotations used by DWG.
Ready for the next workflow
Open the result in AutoCAD and DWG-compatible drafting tools for review, editing or production.
Private file handling
Converted models are not added to the public CAD library and are removed after processing.
Continue your CAD workflow
Explore Marathon
OS CAD resources
Preview a model before conversion, find an existing engineering file, open a 2D drawing, or get specialist help when a source mesh needs to be rebuilt.
Browse CAD modelsSearch ready-to-use engineering and 3D-printing files across the Marathon OS library.Browse 2D technical drawingsExplore PDF, SVG and DXF drawing resources for engineering review and documentation.Get CAD design supportWork with a vetted designer when the model needs repair, remodelling or a production-ready native file.
Simple conversion workflow
How to convert DXF to DWG online
Move from DXF drawing to AutoCAD DWG in three clear steps.
Upload your DXF file
Drag and drop the .dxf file into the converter or choose it from your device. Files up to 300 MB are supported.
Use DWG as the output
This page is preconfigured for DXF-to-DWG conversion, so you do not need to search through target formats.
Download and inspect the DWG
Download the result and open it in your preferred compatible application to confirm its geometry and scale.
Format behaviour
What changes when
DXF is converted to DWG?
DXF and DWG are drawing formats, but application-specific objects, fonts and metadata may be represented differently during exchange.
Normally retained
- 2D linework and common entities
- Drawing scale where supported
- Standard layers
- Basic dimensions and annotations
May not be retained
- Application-specific objects
- Custom fonts and line types
- External references
- Unsupported metadata
DXF drawingDXFAutoCAD DWGDWGReview the converted DWG drawing for fonts, dimensions and application-specific entities before production use.
Format comparison
DXF versus DWG
Choose the output according to what the next stage of your workflow needs.
| Feature | DXF DXF | DWG DWG |
|---|---|---|
| Main purpose | Open 2D CAD exchange, CAM and drafting handoff | Native AutoCAD drafting and documentation |
| Geometry | 2D entities, layers and annotations | 2D entities, layers and annotations |
| Textures and UV mapping | Not applicable | Not applicable |
| Materials | Not applicable | Not applicable |
| Object groups | Layers and drawing blocks | Layers and drawing blocks |
| Common workflow | CAD, CAM and vector drafting tools | AutoCAD and DWG-compatible drafting tools |
Choose DWG when
Your next application or supplier specifically requires a DWG file.
Native AutoCAD drafting and documentation is the next stage of the workflow.
The target geometry representation suits the downstream task.
Keep DXF when
Your project still depends on data unique to the source format.
You need to continue editing in CAD, CAM and vector drafting tools.
The model is still being prepared rather than handed off.
Before continuing
Check the converted
DWG before the next step
Changing the file format does not automatically make a model production-ready. Review these checks in the application used for your next workflow.
Important: File formats may not include a standard unit definition. Always verify dimensions after conversion.
- 01
Verify dimensions and scale
Confirm that the converted DWG file uses the expected size and unit interpretation.
- 02
Inspect the complete geometry
Check that all expected bodies, surfaces, curves or drawing entities are present.
- 03
Review surface orientation
Look for flipped faces, inconsistent normals or reversed boundaries after conversion.
- 04
Check topology and open edges
Inspect gaps, overlaps, invalid edges and disconnected geometry before downstream use.
- 05
Confirm layers and object structure
Verify that supported layers, groups and model organisation were translated as expected.
- 06
Open the file in its target application
Preview the DWG result in the software used for the next workflow before production use.
Common problems
DXF-to-DWG conversion troubleshooting
Most conversion issues come from differences between file formats or problems already present in the source geometry.
The DWG file has the wrong size
The source and destination tools may interpret units differently. Open the DWG file and select the correct unit or scale.
Fix: Verify units and dimensionsTextures or materials disappeared
This can be expected when DWG does not support the texture, UV or material information stored by DXF.
Fix: Keep the original DXF visual dataThe model has missing faces
The DXF source may contain open edges, invalid polygons, overlapping geometry or inverted normals that remain visible after conversion.
Fix: Inspect and repair the source geometryThe conversion fails on a large file
High polygon counts and complex geometry need more processing. Confirm the file is below 300 MB and opens correctly in a viewer.
Fix: Simplify unnecessary geometry detailSecure processing
Your 3D files remain yours
Product models can contain confidential engineering information. Privacy and file handling stay explicit beside the tool.
Encrypted upload
Files are transferred through a secure connection.
Automatic deletion
Uploaded and converted files are deleted after 7 days.
You retain ownership
Conversion does not transfer ownership of your model.
Not publicly listed
Your uploaded files are not added to the Marathon CAD library.
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Frequently asked questions
Everything to know before converting
Quick answers about formats, pricing, file limits, conversion quality and privacy.
How do I convert DXF to DWG online?
Upload your DXF file (.dxf) to Marathon OS, choose DWG as the output format, and download the converted file in seconds — no software installation required.
Why convert DXF to DWG?
Converting DXF to DWG is useful when you need a native AutoCAD file from a neutral 2D exchange format.
What DXF and DWG file extensions are supported?
This converter accepts .dxf input files and outputs .dwg. Upload up to 300 MB per file.
Is the DXF to DWG converter free?
Files under 5 MB are free to convert and download on Marathon OS. Larger files may require a small fee per conversion.
How is my data stored and secured?
Your files are encrypted during upload, processed securely in the cloud, and automatically deleted after 7 days.
Do I need any special software or training?
No — upload your DXF file and download DWG directly in your browser. No plugins or desktop CAD tools required.
Can I convert large DXF models to DWG?
Yes — Marathon OS is optimized for large and complex CAD models. You can upload files up to 300 MB for DXF to DWG conversion.
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