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Choose a file
Select a local file from the upload area. The page checks the file type and size before processing.
Free 3D Format Converter
Convert 3MF, FBX, GLB, glTF, OBJ, PLY, and STL locally, with quick guidance on when to choose web-ready GLB, editable OBJ/PLY, or print-ready STL.
Browser-only, private
Convert common 3D model formats locally without uploading the file.
Quick tips
- Choose GLB for browser previews and real-time review, OBJ or PLY for editing and scan analysis, and STL for slicers.
- Conversions run locally in the browser, so no model upload is required.
- STL output is geometry-only; materials, textures, rigs, animations, and units need target-app review.
- For production-critical assets, open the converted file in your target DCC, engine, or slicer before delivery.
About Free 3D Format Converter
Convert 3MF, FBX, GLB, glTF, OBJ, PLY, and STL locally, with quick guidance on when to choose web-ready GLB, editable OBJ/PLY, or print-ready STL.
Free 3D Format Converter is designed for quick browser-side preparation before upload, printing, modeling, compression, review, or handoff. Files are processed locally so you can keep lightweight jobs out of server queues.
How to use Free 3D Format Converter
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Process locally
Run the tool in your current browser session without installing desktop software.
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Download the result
Download the finished file and review it before printing, modeling, publishing, or handoff.
Why use this browser tool
Local-first processing
Free 3D Format Converter runs in the browser, which is useful for quick files you do not want to upload.
No installation
Open the page and work immediately across devices without setting up a desktop utility.
Free output
No account is required for these browser utilities, and exported files are not watermarked.
Workflow-ready
Use the result in slicers, 3D viewers, editors, web pages, review threads, or delivery folders.
Tell us what you are starting from and what you want to do, then pick the tool for that task.
Prepare a model for 3D printing
When the next step is a slicer or a physical print, convert to STL or 3MF and check printability first.
3MF to STL converter
Turn a 3MF manufacturing package into a geometry-only STL for slicer handoff.
Open tool →GLB to STL converter
Convert a GLB web model to STL for print tests, with unit and loss guidance.
Open tool →glTF to STL converter
Convert an embedded glTF scene to STL for a geometry-only print workflow.
Open tool →STL to 3MF converter
Package a unitless STL into a millimeter-declared 3MF for modern slicers.
Open tool →Print-readiness checker
Check non-manifold edges, holes, normals, unit inference, wall thickness, and bed size.
Open tool →STL viewer
Inspect STL geometry locally before slicing or conversion.
Open tool →Model scale calculator
Compute exact scale multipliers between mm, cm, meters, inches, and feet.
Open tool →Preview or share a model on the web
For browser previews, product pages, or game-engine handoff, work in GLB or glTF.
GLB viewer
Open a GLB file locally with orbit controls before handoff.
Open tool →glTF viewer
Open a glTF scene locally before browser or engine import.
Open tool →GLB inspector
Inspect GLB headers, size, meshes, materials, textures, and animation counts.
Open tool →3D model viewer
View GLB, glTF, OBJ, STL, PLY, FBX, and 3MF in one browser viewer.
Open tool →Edit the mesh in Blender, Maya, or CAD
When the next step is mesh cleanup or DCC/CAD editing, use OBJ or an editable exchange format.
GLB to OBJ converter
Convert GLB to OBJ for mesh editing, DCC cleanup, or CAD review.
Open tool →OBJ viewer
Preview OBJ geometry locally before cleanup or conversion.
Open tool →FBX viewer
Preview FBX files locally before DCC import or delivery.
Open tool →3MF viewer
Preview 3MF manufacturing packages before slicing or review.
Open tool →Inspect, measure, or analyze geometry
For asset QA, texture budget, or scan review, use the inspection and analysis tools.
GLB inspector
Inspect scene, mesh, material, and animation counts before 3D handoff.
Open tool →Texture size checker
Check texture dimensions, power-of-two fit, and estimated GPU memory.
Open tool →Model scale calculator
Calculate scale multipliers for meters, centimeters, millimeters, inches, and feet.
Open tool →PLY viewer
Preview PLY scan meshes before cleanup, analysis, or conversion.
Open tool →Frequently asked questions
What is Free 3D Format Converter?
Convert 3MF, FBX, GLB, glTF, OBJ, PLY, and STL locally, with quick guidance on when to choose web-ready GLB, editable OBJ/PLY, or print-ready STL.
Is Free 3D Format Converter free?
Yes. This browser tool is free to use and does not add watermarks to exported files.
Are my files uploaded?
No for these browser utilities. The supported processing path runs locally in your browser session.
What file size works best?
Smaller files finish faster. Very large images, videos, or 3D meshes may be limited by browser memory and device performance.
Will the output keep every detail?
Output quality depends on the source file, browser capability, and what the target workflow can represent.
Do I need to install software?
No. Use the page directly in a current browser, then download the processed result.
Related tools
Free 3D Model Viewer
View GLB, glTF, OBJ, STL, PLY, FBX, and 3MF model files locally in your browser before review, import, or delivery.
Free GLB Inspector
Read the actual GLB JSON chunk locally and check structure, estimated geometry, materials, textures, skins, and extensions before handoff.
Free 3D Model Scale Calculator
Calculate an exact scale multiplier between separate source and target units before scene import or slicer handoff.
Free 3MF Viewer
Preview 3MF manufacturing packages locally before slicing, 3D printing review, or format conversion.
Free STL Viewer
Inspect STL geometry locally before slicing, 3D printing, conversion, or model handoff.
Free GLB to STL Converter
Convert GLB to STL in the browser: keep the triangle mesh, drop the textures, materials and animation, and confirm the unit before you slice.