3D ConverterFree, Private, Browser-Based
Convert GLB, GLTF, OBJ, STL, FBX, and PLY files in seconds — right inside your browser. A fast, 100% private 3D converter with no uploads, no sign-up, and no watermarks.
Stop fighting format incompatibility between Blender, Maya, 3ds Max, Unity, and Unreal. Drop in a 3D model, pick an output format, and download the converted file instantly. Everything runs locally in your browser, so your models never leave your device.
Upload 3D Model
Drag and drop or click to upload. Files are processed locally in your browser.
Click or drag to upload
Supports GLB, GLTF, OBJ, STL, FBX, PLY
3D Preview
No model loaded
Upload a 3D model to preview and convert it
Popular Conversions
The most-searched 3D format conversions, ready to use.
GLB → STL
Stereolithography, the standard for 3D printing
FBX → GLB
Binary glTF, the most common modern 3D format
OBJ → STL
Stereolithography, the standard for 3D printing
GLB → OBJ
Wavefront OBJ, widely supported geometry format
FBX → OBJ
Wavefront OBJ, widely supported geometry format
STL → OBJ
Wavefront OBJ, widely supported geometry format
PLY → STL
Stereolithography, the standard for 3D printing
GLTF → GLB
Binary glTF, the most common modern 3D format
OBJ → GLB
Binary glTF, the most common modern 3D format
GLB → GLTF
JSON-based glTF, human-readable
FBX → STL
Stereolithography, the standard for 3D printing
STL → GLB
Binary glTF, the most common modern 3D format
Browse by Input Format
See every conversion path from a specific format.
GLB
Binary glTF, the most common modern 3D format
GLTF
JSON-based glTF, human-readable
OBJ
Wavefront OBJ, widely supported geometry format
STL
Stereolithography, the standard for 3D printing
FBX
Autodesk FBX, popular in animation pipelines (input only)
PLY
Polygon File Format, common in 3D scanning
What Is a 3D Converter?
A 3D converter is a tool that translates 3D model files between different formats — GLB, GLTF, OBJ, STL, FBX, and PLY. Each format has its own strengths: GLB is compact and web-friendly, OBJ works everywhere, STL is the standard for 3D printing, FBX carries animation rigs for game engines. A 3D converter lets a single model move freely between Blender, Unity, Unreal, 3D printing slicers, and web viewers without rebuilding it from scratch.
This 3D converter runs entirely in your browser using JavaScript. There is no server upload, no queue, and no account requirement. That means zero wait time, zero privacy risk, and zero cost — whether you convert one model or one hundred.
Format translation
Parses geometry, materials, and textures from one 3D format and re-encodes them into another, preserving as much data as the target format supports.
Local processing
All conversion happens on your device. Your 3D files are never uploaded, stored, or even momentarily held on a server.
Instant feedback
No upload means no queue. Conversion starts the moment you click and typically finishes in seconds.
Universal access
Runs in any modern browser on Windows, macOS, Linux, iOS, and Android. No install, no plugin, no GPU requirement.
Why You Need a Dedicated 3D Converter
Cross-software 3D work is full of friction. Here's what gets in your way — and how this tool fixes it.
Without a dedicated 3D converter
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Cross-software format lock-in
Blender, Maya, 3ds Max, Unity, and Unreal each favor different 3D formats. Moving assets between them often ends in failed imports, missing textures, and broken UVs.
- ✕
Opening heavy 3D software just to transcode
Launching Blender or Maya only to export a GLB is overkill — gigabytes of RAM, slow startup, and a steep menu dive just to change a file extension.
- ✕
Online converters that upload your files
Most free online 3D converters send your model to a server. That's a non-starter for proprietary assets, client work, or anything under NDA.
- ✕
Broken meshes after conversion
Cheap converters lose normals, flip winding, drop textures, or produce non-watertight geometry. You end up repairing models instead of converting them.
- ✕
Watermarks, sign-ups, daily caps
Free tiers that slap a watermark on your model, cap you at three conversions a day, or demand an account before you can even test the tool.
With this 3D converter
Bidirectional 6-format conversion
Convert freely between GLB, GLTF, OBJ, STL, FBX, and PLY — covering web, 3D printing, game engines, and DCC tools in one place.
Files never leave your device
Conversion happens 100% in your browser. No upload, no server storage, no telemetry. Safe for proprietary, commercial, or client work.
Lossless when the format allows it
Geometry, materials, and textures are preserved accurately when converting between formats that support them (for example GLB ↔ GLTF ↔ FBX).
Instant, no-queue conversions
Click Convert and the result is ready in seconds. No upload wait, no server processing delay, no email-waitlist.
Free, no sign-up, no watermarks
Truly free with no daily limit, no account requirement, and no watermark on output files. Convert one model or a hundred — same price.
Any device, any OS
Runs in any modern browser on Windows, macOS, Linux, iOS, and Android. No install, no plugin, no GPU requirement.
How to Convert a 3D Model
Three steps, no software install, zero learning curve
Upload your 3D file
Drag and drop your model or click to browse. Supports GLB, GLTF, OBJ, STL, FBX, and PLY up to your device's memory limit.
Pick an output format
Choose the format you need. The output menu shows every supported target — pick the one that matches your downstream tool.
Convert, preview, download
Click Convert. Preview the result in the built-in 3D viewer to confirm everything looks right, then download the converted file.
What Makes This 3D Converter Different
Built for 3D professionals who care about speed, privacy, and accuracy
100% Private by Design
Conversion runs entirely on your device. No upload, no server-side storage, no telemetry. Your 3D models are yours alone.
Instant Results
No upload queue, no server wait. Conversion starts the moment you click and finishes in seconds for most models.
Free & Unlimited
No account, no watermark, no daily cap. Convert as many 3D files as you need — completely free, forever.
Built-in 3D Preview
Inspect the original and converted model side by side. Rotate, zoom, and check mesh integrity before you download.
Cross-Platform
Runs in any modern browser on Windows, macOS, Linux, iOS, and Android. No install, no plugin, no GPU required.
Format-Aware Conversion
Smart handling tells you upfront which features each target format supports — so you know exactly what to expect before you convert.
Supported 3D Formats
Six mainstream 3D formats covering web, 3D printing, game engines, and DCC tools
Input formats
GLB
Binary glTF, the most common modern 3D format
GLTF
JSON-based glTF, human-readable
OBJ
Wavefront OBJ, widely supported geometry format
STL
Stereolithography, the standard for 3D printing
FBX
Autodesk FBX, popular in animation pipelines (input only)
PLY
Polygon File Format, common in 3D scanning
Output formats
GLB
Binary glTF, the most common modern 3D format
GLTF
JSON-based glTF, human-readable
OBJ
Wavefront OBJ, widely supported geometry format
STL
Stereolithography, the standard for 3D printing
PLY
Polygon File Format, common in 3D scanning
Generate a 3D model with Fast3D AI.
Generate a model from text or an image with Fast3D AI, then convert it to any format. The fastest path from idea to ready-to-use 3D file.
Generate → convert — all on fast3d.org.
Who Uses This 3D Converter?
A free browser-based 3D converter for every part of the 3D pipeline
Game Developers
Move assets between Unity and Unreal, convert FBX to GLB for the web, or hand clean GLTF files to artists using different DCC tools.
3D Printing Studios
Drop in an OBJ or GLB from a client and convert to STL in seconds. Preview mesh integrity in the viewer before slicing.
AR / VR Creators
Convert heavy source models into lightweight GLB for WebXR, mobile AR, and product configurators — without leaving your browser.
Industrial & Product Designers
Translate CAD exports via STL or OBJ into formats your rendering and visualization pipeline can actually read.
3D Artists & Animators
Send assets to collaborators using different software without worrying about who can open which 3D format.
Students & Educators
Skip the install-and-learn-Blender step. Convert 3D files for class projects, assignments, and 3D printing demos in one click.
What Users Say About This 3D Converter
Real feedback from game developers, designers, and 3D printing enthusiasts
"I used to open Blender just to convert FBX to GLB for our Unreal pipeline. Now I drop the file in, click convert, and I'm done in seconds. Saves me hours every week."
Leo M.
Game Asset Artist
"Most online 3D converters upload your files — which I can't allow for client work. This one runs fully in the browser. It's the first free converter I can actually use professionally."
Sara K.
Industrial Designer
"Customers send me models in a dozen different formats. I convert everything to STL here, preview it to check the mesh, and then slice. The whole workflow takes a minute."
Jason T.
3D Printing Studio Owner
"Converting GLB preview files for web AR demos is something I do every day. No watermark, no sign-up, no daily limit. Exactly what a developer tool should be."
Mia W.
AR Marketing Developer
Frequently Asked Questions
Everything you need to know about this 3D converter
Still have questions? Reach out via the contact page.
Convert Your First 3D Model in Seconds
No software install, no sign-up, no watermark. Drop in a 3D file, pick a format, and download — all in your browser.
Try the 3D Converter FreeNo credit card required · No account needed · Unlimited conversions