STL → glTF

Convert STL to glTF

Convert STL files to glTF in seconds. Geometry, UVs and materials are carried over where glTF supports them, and the model lands the right way up.

  • Geometry, UVs and materials kept where supported
  • Correct orientation and scale
  • Runs on your computer: nothing is uploaded
No file yet
Drop an STL file or
Files stay on your computer.
Done

How to convert STL to glTF

  1. Add your STL file

    Drop it on the converter above or click browse. It opens in your browser, so nothing is uploaded.

  2. Check the format is glTF

    glTF is already selected. You can switch to any other output from the menu.

  3. Convert and download

    Click Convert and your glTF file is ready in seconds. Download it straight away.

What is STL?

STL describes a surface as a list of triangles, with no colour, material or unit information. It is the default file for 3D printing and is exported by almost every CAD and modelling program.

Full name
Stereolithography
Type
Triangle mesh
Used in
Cura, PrusaSlicer, Bambu Studio, Blender, Fusion 360, SolidWorks
Strength
Universal support in 3D printing software.
Limits
Only triangles: no colours, no materials, no units, no editable CAD features.
More about STL

What is glTF?

glTF is the open Khronos standard for delivering 3D content on the web. The .gltf version is human-readable JSON that points to a separate .bin file for geometry and to image files for textures.

Full name
GL Transmission Format 2.0
Type
3D scene (meshes, materials)
Used in
three.js, Babylon.js, Unity (via plugin), Blender, Sketchfab
Strength
Open standard, easy to inspect and edit.
Limits
Comes as several files; use GLB when you need a single file.
More about glTF

Related conversions

STL → STEPSTL → STPSTL → IGESSTL → BREPSTL → OBJSTL → FBXSTEP → glTFSTP → glTFIGES → glTFOBJ → glTFFBX → glTFGLB → glTF

Questions

Are materials and textures kept?

Colours and texture coordinates are carried over when glTF supports them. Texture images are kept for formats that can hold them.

Will my model be upside down?

No. STL and glTF may use different "up" directions, and we rotate the model so it stands the same way in your software.

Are my files uploaded?

No. The conversion runs inside your browser.