Convert AMF to GLB
Free AMF to GLB converter that runs in your browser. See real dimensions before you download.
How to convert AMF to GLB
- Drop your AMF file onto the converter — it opens in your browser, nothing is uploaded.
- Check the preview and the dimensions in mm; fix units or the up axis in “Units & orientation” if the size or orientation looks wrong.
- Choose GLB as the output and click Convert. Several files download as one ZIP.
What carries over from AMF to GLB
| AMF | GLB | Result | |
|---|---|---|---|
| Colour / materials | Yes | Yes | Kept |
| Textures | No | Yes | — |
| Units stored in file | Yes | Yes | Written as mm → metres |
| Separate parts | Yes | Yes | Kept |
| Usual up axis | Z | Y | Rotated (switchable) |
About AMF files
AMF was standardised as ASTM F2915 and later ISO/ASTM 52915, with the aim of fixing the shortcomings of STL for additive manufacturing. A file is XML, optionally compressed as a ZIP, and describes one or more objects made of a vertex list and volumes of triangles. Unlike STL, it declares units, such as millimetre, inch or micrometre, and can attach colours and materials to volumes or even to individual triangles, with gradients between them. The specification also allows curved triangles, constellations that arrange several objects, and custom metadata. In practice it was overtaken by 3MF, which came from industry backers and gained support in Windows and the main slicers. AMF files still appear from some multi-material printers and research tools, and from older exporters in Cura, Slic3r and Meshmixer.
About GLB files
GLB is the binary container for glTF 2.0, the format the Khronos Group describes as the JPEG of 3D. One .glb file bundles a JSON scene description, binary mesh buffers and embedded images, so nothing can go missing in transit. The format was designed for efficient delivery and loading on the web, and it is now used by Three.js, Babylon.js, model-viewer, Google Search 3D results, Meta platforms, Unity and Unreal importers, and many marketplaces such as Sketchfab. glTF defines a physically based metallic-roughness material model, a node hierarchy, cameras, skins and animations. Coordinates are in metres with +Y up and a right-handed system. It is excellent for display and game assets, but it is a presentation format rather than a manufacturing one, so print workflows usually convert it first.
3D printing notes
AMF is mainly useful when a tool hands you one. Several older slicers, including Slic3r and its descendants, can import it, and it carries units, so size is less ambiguous than with STL. Colours and materials may carry over to multi-material slicers, but support is uneven, so check the result on the plate before printing. If the destination is Bambu Studio or OrcaSlicer, 3MF is the better route. MeshShift reads AMF and writes AMF in the browser, and the same file can be converted to 3MF or STL. Run the print check for holes or non-manifold edges before slicing, since AMF does not guarantee a closed mesh any more than STL does.
Frequently asked questions
Is this AMF to GLB converter free and private?
Yes. The conversion runs in your browser with JavaScript and WebAssembly, so your AMF file is never uploaded to a server. There is no sign-up, no watermark and no daily limit; very large files are limited only by your device's memory.
Is AMF better than STL?
On paper, yes: it has units, colour, materials and several objects. In practice STL is accepted everywhere and AMF is not, and 3MF now fills the same role with much wider support. Use AMF only when a specific tool or workflow requires it.
What is the difference between GLB and glTF?
They describe the same scene. glTF is usually a JSON file with separate .bin and image files, while GLB packs everything into one binary file. GLB is easier to share and upload, glTF is easier to inspect and edit by hand.