Consistent Content.
Consistent Results. Everywhere.

Imagine the world’s largest library of 3D models available in any format. TurboSquid is proud to announce a breakthrough in 3D model standardization - StemCell. 3D artists will soon be able to build a model in their preferred format, upload it to TurboSquid’s servers, and receive perfect conversions to many other formats, including major game engines. Customers will feel like they’re working with a native file, no matter what app they’re working in. Artists can focus on building beautiful new models instead of mastering the art of conversions. Our vision is that buying a 3D model will be as reliable as buying a stock photo - it should just work.

Under the hood, a StemCell submission consists of clean geometry and texture-based materials for standard specular and PBR workflows.

Ideal StemCell 3D Model

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Clean subD mesh, good edgeflow, and minimal density.
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Fully unwrapped and atlased UVs.


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Materials use only textures, no procedurals.


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For use in DCC applications and offline renderers.
Metallic PBR
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For use in real-time game engines.


Clean, Minimal Density Mesh
Unwrapped UVs
Specular/ Gloss Textures
Metallic PBR Textures
Texture-based Materials
We've been huge StemCell supporters since TurboSquid first approached us with the idea. Sane 3D standardization that will open up a huge library of PBR-based models to our Max and Maya developers? We can't wait! StemCell models will help nVidia's community realize the vision for their next game or VR project that much quicker. Frank DeLise, Director, Product Management for nVidia nVidia
I really like that TurboSquid is tackling this problem," said Sebastien Deguy, Founder and CEO of Allegorithmic. "Their PBR-based approach to material conversions lines up very nicely with the modern texture workflows that we support and that we've seen adopted by tens of thousands of Substance Designer & Painter users worldwide. Sébastien Deguy, Founder and CEO of Allegorithmic Allegorithmic

Software Support

After much research and development, StemCell is now available for TurboSquid artists. Artists can currently upload a model built in 3ds Max or Maya (with V-Ray or Mental Ray) and receive back conversions in 3ds Max, Maya, Cinema 4D, glTF, Unreal, Unity, Arnold, and USDZ. Support for Lumberyard, Blender, and more renderers is coming in 2020.

Mental Ray

Industry Support

Some of the biggest companies in the 3D industry are helping to shape the StemCell spec and process. Learn more about our StemCell Industry Council.

Sign up to stay informed about StemCell updates

Real-Time StemCell Preview

Try a StemCell Model In Your Workflow

See StemCell in action. Click on the button below to see all available StemCell content - each model has been published with a wide variety of formats including 3ds Max, Maya, Cinema 4D, Unity, and Unreal.

Browse StemCell Models
StemCell is an exciting step forward for everyone in the stock 3D industry. Finally there is a tool for converting your models seamlessly into different formats, which gives us back precious time to focus on making beautiful models. We are thrilled to be among the first to experience this amazing automation process.
I have always worked on modeling and texturing, but never studied and understood fully the specular maps settings and creation of physically-correct materials. The StemCell info you have shared has been very valuable to my development. Every time I apply corrections based on the spec, they always look perfect to me. I am amazed at how the model can significantly improve with a few simple tweaks and changed values!

TurboSquid artists - learn how you can start making your first StemCell model.

Our spec and training are now live - head over to to learn more about StemCell and PBR workflows.