Free online DWG to SKP converter

A SketchUp user may need an editable .skp model when a project arrives as an AutoCAD drawing, or when the result must be opened in SketchUp, LayOut, or Trimble Connect. Converting the file transfers usable CAD geometry, but it does not automatically turn a 2D plan into a finished 3D building.

What DWG stores

DWG is a proprietary CAD drawing format associated with Autodesk, especially AutoCAD. Architects, engineers, contractors, surveyors, fabricators, and manufacturers use it for plans, site layouts, construction documentation, and technical models.

A DWG can contain 2D lines, arcs, polylines, blocks, text, dimensions, hatches, layers, and metadata. Depending on the source application, it can also contain 3D solids, surfaces, meshes, external references, and application-specific objects from products such as Civil 3D or AutoCAD Architecture.

What SKP stores

SKP is SketchUp's native model format. It stores SketchUp geometry, groups, components, materials, tags, scenes, styles, and model settings for interactive 3D editing.

SKP is appropriate when the recipient needs to edit geometry in SketchUp, build an architectural or interior model, create views in LayOut, or share a model through compatible Trimble workflows. It does not preserve DWG drafting behavior: CAD dimensions, paper-space layouts, annotation styles, constraints, and parametric solids generally do not become equivalent SketchUp objects.

Convert DWG to SKP with SketchUp

Use a paid desktop edition of SketchUp that includes CAD import, such as SketchUp Pro or SketchUp Studio. The exact import options and supported DWG versions depend on the SketchUp release.

1. Make a copy of the DWG. If possible, open the copy in AutoCAD or another compatible CAD editor and remove unused layers, hatches, dimensions, title blocks, construction geometry, and distant survey objects.
2. In AutoCAD, run AUDIT and PURGE; use OVERKILL when duplicate lines or overlapping geometry are present. Bind external references if their contents must be included, because an unbound Xref may not accompany the drawing.
3. Check the source units with UNITS and note a known distance. A millimetre drawing imported as metres, for example, can be 1,000 times too large. Keep essential geometry in model space; paper-space layouts are not converted into equivalent SketchUp scenes.
4. If the SketchUp release cannot read the DWG version, save a copy to an older DWG release from the CAD application.
5. In SketchUp, choose File → Import, select the AutoCAD DWG file type, choose the file, and open the CAD import options.
6. Set the import units to the units used by the source drawing. Enable Preserve drawing origin only when shared project or survey coordinates are required. Otherwise, work near SketchUp's origin to reduce precision and display problems caused by large coordinates.
7. Use Import Layers as Groups when layer-based organization is useful. SketchUp tags do not behave like CAD layers, so place imported edges and faces inside groups or components and control visibility at the group level rather than assigning tags to loose raw geometry.
8. Import the file, check a known dimension, inspect missing or malformed geometry, and choose File → Save As to save the result as .skp. Group the imported drawing before editing it; create components for repeated elements.

Convert the file without desktop software

You can upload the DWG to the free converter on 101convert.com, select SKP as the output format, start the conversion, and download the resulting SketchUp file. Open the downloaded file in SketchUp and verify its scale, geometry, and compatibility before using it for dimension-sensitive work; conversion cannot recover unsupported DWG objects or create missing 3D detail.

Quality and compatibility limits

• A 2D DWG normally imports as flat edges and, where boundaries are closed and coplanar, faces. It does not generate walls, roofs, doors, or other 3D construction automatically. Use the imported plan as a tracing reference when a 3D model is required.
• Open polylines, small gaps, overlapping lines, non-coplanar segments, and duplicate geometry can prevent SketchUp from creating faces. Clean the DWG before import and inspect the result at several zoom levels.
• SketchUp represents circles and curves with segmented edges. High segment counts increase file size and reduce performance; low counts make curved objects visibly faceted.
• Proxy objects, custom application objects, constraints, specialized line types, some hatches, fonts, dimensions, annotations, paper-space viewports, and title blocks may be omitted, flattened, or simplified. Preserve the original DWG when exact drafting documentation is required.
• 3D DWG solids, NURBS surfaces, and dense meshes may arrive as grouped faces, triangulated geometry, or incomplete surfaces rather than editable parametric CAD solids. Inspect for missing faces, reversed faces, excessive triangulation, and incorrect scale before using the SKP for rendering, quantities, or coordination.
• Large georeferenced coordinates can cause inference and display errors. Move a working copy near the SketchUp origin after confirming that geographic coordinates are not required for the project.
• SKP files saved by a newer SketchUp release may require a compatible version or a version-specific save option for older software. Keep the source DWG and the converted SKP as separate files.