AIto3D.ai
Web 3D & AR
Prepare GLB, glTF, and USDZ assets for interactive websites, ecommerce product viewers, portfolios, mobile AR, and Apple Quick Look workflows.
Free Online 3D Converter
Convert GLB, glTF, OBJ, FBX, STL, PLY, USDZ, and 3MF files online. Preview the real model, inspect materials or wireframe, correct its orientation, and download a compatible format for web, games, AR, design, or 3D printing.
✓ Interactive 3D preview
✓ Correct orientation before export
✓ Multiple output formats
✓ Desktop and mobile browsers
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One converter, multiple workflows
Convert 3D Files for Web, Games, AR, and 3D Printing
Move a model into the format your next tool expects without making conversion a blind download. AIto3D.ai lets you inspect the actual 3D asset first, so orientation, materials, and visible mesh issues can be checked before export.
Games & 3D Software
Convert models for Blender, Maya, Cinema 4D, Unity, Unreal Engine, asset marketplaces, prototyping, and production handoff.
3D Printing
Move between STL, 3MF, OBJ, and other geometry formats for slicers, prototypes, maker projects, print checks, and manufacturing preparation.
AI-Generated 3D Assets
Convert models created with AIto3D.ai or other 3D generators into practical formats for editing, rendering, printing, sharing, or delivery.
Supported 3D formats
Convert 8 Common 3D Model Formats in One Place
The converter detects the uploaded source format and rebuilds the export menu around compatible outputs, so the formats shown are tailored to the current file.
| Format | Recommended use | Popular conversions |
|---|---|---|
| GLB / glTF | Web 3D, interactive viewers, ecommerce, real-time product previews, and AI-generated assets. | GLB to OBJ · GLB to STL · GLB to FBX · GLB to USDZ · glTF to GLB |
| OBJ | Broad geometry exchange for Blender, Maya, 3ds Max, modeling tools, and asset handoff. | OBJ to GLB · OBJ to STL · OBJ to PLY · OBJ to FBX |
| FBX | Game engines, animation pipelines, digital content creation tools, Unity, and Unreal. | FBX to GLB · FBX to OBJ · FBX to STL |
| STL | 3D printing, slicers, geometry checks, prototypes, and simple mesh exchange. | STL to GLB · STL to OBJ · STL to 3MF · STL to PLY |
| PLY | 3D scans, vertex-color assets, research data, and geometry exchange. | PLY to OBJ · PLY to GLB · PLY to STL |
| USDZ | Apple AR Quick Look, iPhone and iPad previews, mobile visualization, and ecommerce AR. | USDZ to GLB · USDZ to OBJ · GLB to USDZ |
| 3MF | Modern 3D printing projects, multi-part print workflows, and manufacturing preparation. | 3MF to STL · 3MF to OBJ · 3MF to GLB |
Material, texture, animation, hierarchy, and unit support vary by format. Inspect the converted model and confirm production requirements before using it in a final workflow.
Preview before export
Inspect and Fix Your Model Before You Convert It
A useful 3D converter should show more than a filename and download button. Rotate the model, zoom into details, compare materials, inspect the wireframe, and correct orientation before preparing the exported file.
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Interactive 360° previewInspect the front, back, underside, silhouette, proportions, and small geometry details.
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Lighting and material checksSwitch between studio, daylight, sunset, night, product lighting, original material, clay, and wireframe.
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Export-ready orientationRotate or tilt an incorrectly aligned model and apply the corrected orientation to the download.
How it works
How to Convert a 3D File Online
Upload, inspect, and export from one responsive browser interface. No desktop modeling setup is required to begin.
Upload a 3D file
Drag and drop or choose a GLB, glTF, OBJ, FBX, STL, PLY, USDZ, or 3MF file. The source format is detected automatically.
Preview and adjust
Rotate, zoom, change lighting, inspect clay or wireframe views, and correct the model orientation when needed.
Choose a format and download
Select a compatible output in the Convert & Export panel, then prepare and download the converted 3D model.
Format guide
Which 3D Format Should You Choose?
The right output depends on where the model goes next. Use this quick guide before choosing an export format.
Choose GLB for compact delivery, browser-based 3D, product viewers, portfolios, and easy sharing with packaged materials.
Choose glTF when a web workflow benefits from separate resources or a standards-based real-time 3D asset structure.
Choose FBX for game engines, animation tools, digital content creation software, and broader production pipelines.
Choose OBJ for a widely supported mesh exchange format across modeling, sculpting, visualization, and editing applications.
Choose STL or 3MF for slicers and print preparation, then verify scale, units, wall thickness, manifold geometry, and printability.
Choose USDZ for Apple AR Quick Look. Choose PLY for scan data, vertex colors, research assets, and geometry exchange.
Continue after conversion
Keep Working with Your 3D Model
Conversion is often only one step. Continue with purpose-built AIto3D.ai tools for smaller files, physical measurements, polished images, and 360° video.
Browser-based workflow
Preview and Supported Conversion Operations Run in Your Browser
The model is loaded into the interactive browser viewer for supported preview and export operations. AI production features such as rendering, video, or other advanced tools open separate workflows and make their own processing requirements clear.
No desktop converter installation requiredInteractive model inspection before exportNo conversion-history interface on this pageOptional AI tools are clearly separated
FAQ
Online 3D Converter Questions and Answers
Answers about supported formats, materials, orientation, 3D printing, web output, mobile use, and the difference between conversion and 3D volume calculation.
Is the AIto3D.ai 3D Converter free?
Yes. You can upload, preview, choose an available export format, and download supported 3D files without installing desktop software. Optional AI production tools are separate workflows.
Which 3D file formats can I convert?
You can upload GLB, glTF, OBJ, FBX, STL, PLY, USDZ, and 3MF files. The export menu updates automatically after the source file is loaded.
Can I convert GLB to OBJ, FBX, or STL online?
Yes. Upload the GLB file, inspect it in the interactive viewer, choose OBJ, FBX, or STL when available, and click Convert & Download.
Can I convert OBJ, STL, PLY, FBX, USDZ, or 3MF to GLB?
Yes. For supported source files, GLB appears in the export menu together with the other compatible output formats.
Will materials and textures be preserved?
Preservation depends on both formats. GLB and glTF can package PBR materials and textures, OBJ may rely on separate MTL and image files, while STL stores geometry without textures.
Can I fix model orientation before downloading?
Yes. Rotate the model left or right, tilt it forward or backward, turn it upside down, or reset the orientation. The corrected orientation is applied to the exported download.
Which format is best for a website?
GLB and glTF are common choices for interactive web 3D because they are designed for efficient delivery of geometry, materials, and textures.
Which format is best for 3D printing?
STL and 3MF are widely used by slicers and print workflows. Always confirm units, scale, wall thickness, watertight geometry, and mesh integrity before printing.
What is the difference between converting a model and calculating its volume?
A 3D converter changes the file format. A 3D model volume calculator measures physical volume, surface area, dimensions, and scale. AIto3D.ai provides both as separate tools.
Can I calculate 3D model volume after conversion?
Yes. After preparing a compatible file, open the AIto3D.ai 3D Volume Calculator to measure volume, surface area, dimensions, and multiple height levels.
Do I need Blender, Maya, or other desktop software?
No desktop software is required to use this online converter. You can still open the downloaded file in Blender, Maya, a game engine, a slicer, or another 3D application for further editing.
Does the converter work on mobile?
The interface is responsive for modern desktop and mobile browsers. Very large or complex models may load more smoothly on a desktop device with more memory and graphics capacity.
Convert Your Next 3D File Online
Upload a model, inspect it in 3D, correct its orientation, and download a compatible format for the next stage of your workflow.