Convert STL to DWG (via DXF 2D Projection)

Convert STL 3D models to a real, AutoCAD-ready DWG (2D projection) — one free conversion, or DXF instantly with no email needed.

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Get one free DWG conversion — or STL to DXF free & instant, no email needed. DXF opens directly in AutoCAD. DWG needs an email (one free conversion) or Pro (100/month).

Convert to DXF instead Get free DWG

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Enter your email for one free DWG conversion, or join the Pro waitlist for ongoing access.

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✔ What it does

Projects STL 3D mesh geometry onto a 2D plane and outputs real binary DWG (one free conversion per email, or Pro for 100/month) or DXF line entities (free and instant, no email needed). Extracts outlines, silhouettes, and footprints from 3D models.

✘ What it does not do

Does NOT preserve 3D structure — this is a 2D projection only. Does NOT retain mesh detail — curved surfaces appear as polygon approximations. Free DWG is limited to one conversion per email address, ever, shared across all four DWG tools on this site (JPG/PNG/OBJ/STL to DWG) — not renewed by using a different tool.

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How STL → DWG conversion works

STL stores 3D geometry as triangulated facets. This tool projects the mesh onto the XY plane (top view by default), extracting visible edges and silhouettes as 2D line entities written to DXF format — free and available now, no email needed. All depth and 3D model data is permanently discarded in the projection. Real binary DWG output is also available: enter your email for one free DWG conversion (a one-time allowance shared across all four DWG tools on this site), or subscribe to Pro for 100 DWG conversions a month. For full 3D format conversion, use STL → OBJ instead.

Limitations

Free DWG is limited to one conversion per email address, ever, shared across all four DWG-gated tools (JPG/PNG/OBJ/STL to DWG) — not per tool. Use STL to DXF for unlimited free DXF output instead.
2D projection only — all 3D depth and model data is permanently lost.
Complex STL meshes project as dense line work that requires manual cleanup.
Curved surfaces appear as polygon approximations due to STL triangulation.

When to use this conversion

Creating a 2D CAD drawing reference from a 3D printed part model.
Extracting a floor plan footprint from a 3D architectural model.
Preparing a 2D template for CNC or laser cutting from a 3D source file.
Generating silhouette outlines from 3D models for technical documentation.

Alternatives to consider

Fusion 360 for integrated 3D→2D drawing workflow with automatic hidden-line removal.
FreeCAD's TechDraw workbench for engineering-accurate 2D drawings from 3D models.

Frequently asked questions

Why can't I get DWG directly?

DWG requires either one free conversion (enter your email — a one-time allowance shared across all four DWG tools on this site) or a Pro subscription (100/month). STL to DXF gives the same 2D projection free and instantly, no email needed.

Does this preserve the 3D model?

No. This is a 2D projection. All 3D depth is permanently lost. For 3D format conversion, use STL → OBJ instead.

How do I get the DWG file?

Enter your email for one free DWG conversion (a one-time allowance shared across all four DWG tools on this site), or subscribe to Pro for 100 a month. Otherwise, use STL to DXF for a free, instant conversion with no email needed.