Free online SKP to FBX converter

Many game engines, renderers, and animation applications accept FBX but do not reliably open SketchUp’s native SKP format. Converting creates a scene file that can be imported into tools such as Blender, Maya, 3ds Max, Unity, or Unreal Engine.

What the SKP format is

SKP is SketchUp’s native 3D model format. SketchUp users create SKP files for architectural models, interiors, furniture, construction concepts, woodworking, and general polygonal design.

An SKP file can store polygon faces, groups, components, materials, texture images, scenes, styles, tags, section planes, dimensions, and SketchUp-specific modeling data. SketchUp Desktop and SketchUp for Web can open and save SKP projects, although web-plan export capabilities differ. Applications other than SketchUp may not open SKP files directly or may interpret their contents incompletely.

What the FBX format is

FBX is an Autodesk-developed interchange format used by digital-content-creation software, visualization tools, animation applications, and real-time engines. It can store polygon meshes, transforms, object hierarchies, UV coordinates, materials, texture references, cameras, lights, and animation data.

FBX generally transfers scene hierarchy and object relationships more effectively than a mesh-only format such as OBJ. It is not a native SketchUp project: groups and components become scene nodes or mesh objects, while SketchUp styles, dimensions, guides, section behavior, and editing logic do not become equivalent FBX features.

How to convert with SketchUp Desktop

1. Open the .skp file in a SketchUp Desktop edition that provides FBX export, commonly SketchUp Pro. Save a backup before changing or exporting the model.
2. Delete or hide geometry that the receiving application does not need. Remove unused definitions with Window → Model Info → Statistics → Purge Unused when appropriate, and reduce unnecessarily large texture images.
3. Check face orientation and materials. Select incorrectly oriented faces and use right-click → Reverse Faces. Reversed, paper-thin, or double-sided surfaces can shade incorrectly after import.
4. Choose File → Export → 3D Model.
5. Set the file type to FBX File (*.fbx), choose a destination, and open Options if the exporter provides that button.
6. Set the export units, axis options, FBX version, texture-map export, and selection-only export as required by the destination application. Exact settings vary by SketchUp release.
7. Export the file, then import it into the target application. Check scale, up-axis, hierarchy, normals, materials, UVs, and texture paths rather than assuming that a successful export confirms a correct transfer.

SketchUp Desktop is normally the most predictable conversion route because SketchUp interprets its own SKP data before exporting it. SketchUp for Web does not generally provide the same direct FBX workflow. If desktop export is unavailable, the file can be converted on 101convert.com for free without installing software; inspect the result carefully because web conversion may not preserve every SketchUp feature.

Using an intermediate 3D application

Blender does not provide a dependable native SKP importer for every SketchUp version. If direct FBX export is unavailable, export DAE (Collada) or OBJ from a SketchUp edition that supports those formats, import that file into Blender, repair the scene, and choose File → Export → FBX (.fbx).

OBJ is suitable for simple mesh exchange but usually loses scene hierarchy and richer material information. DAE may retain more scene structure, but neither format is a guaranteed substitute for direct FBX export. This additional translation can lose component instancing, units, materials, or object organization.

Quality and compatibility limits

• Materials and textures: SketchUp materials usually become basic imported materials. Roughness, metalness, bump, opacity, procedural effects, and physically based shading may need reconstruction. FBX may reference image files rather than contain them, so keep the exported texture folder with the FBX and relink missing images when necessary.
• Geometry: SketchUp faces become polygon meshes. Curves and arcs are already segmented into faces; increasing their smoothness after export does not recreate true CAD geometry. Coplanar surfaces, non-manifold edges, paper-thin objects, and reversed faces can cause missing faces or incorrect shading.
• Groups and components: These may become separate nodes, instanced objects, or duplicated mesh data, depending on exporter and importer settings. A model with many nested components can produce a complex scene or a larger file.
• SketchUp-only content: Styles, dimensions, guides, section planes and cuts, tags as organizational behavior, scenes, dynamic-component logic, construction geometry, and editing history do not transfer as equivalent FBX features. Hidden objects may still be exported or may be omitted according to exporter settings, so verify visibility before conversion.
• Scale and axes: Match units and the up-axis in both applications. A model that is 100 or 0.01 times the expected size usually indicates a unit interpretation mismatch. A 90-degree rotation usually indicates an axis-convention mismatch rather than damaged geometry.
• Normals and smoothing: Inspect backface visibility, face winding, smoothing, triangulation, and UVs in the destination program. Different importers can triangulate the same polygon differently.
• File size: Purge unused content, remove unnecessary hidden geometry, reduce oversized textures, and avoid exporting repeated component data when the exporter offers instancing controls.
• FBX versions: FBX compatibility depends on both the file version and the receiving application’s importer. If the target program rejects the file, retry with another FBX version offered by SketchUp or pass the model through a current desktop 3D application.