PLY to STL File Converter: Free & Online

Convert 3D models from .PLY to .STL (Stereolithography) file format and prepare for printing in one app.

Trusted by 10,000+ engineers
No Limits
Automatic Mesh Repair
SSL & Auto-Delete
Video coming soon

Read our step-by-step guide:

Which PLY to STL
Converter Is Best for You?

Compare PLY to STL converters and find the best fit for your workflow.

MeshInspector App
MeshInspector Web
Other Converters
Speed
Ultra-fast Local processing
Fast
Slow
File Size Limits
Unlimited
Unlimited
File size limit (50 MB)
File Number Limits
Unlimited
Unlimited
Usually single file only
Folder Support
Full folder import
Full folder import
Not supported
Assembly Conversion
Partial or full assembly
Partial or full assembly
Not supported
Mesh Validation
Integrated
Integrated
Not supported
Auto Mesh Repair
Advanced
Advanced
Not supported
Mesh Repair Options
Advanced
Advanced
Not supported
Accuracy Control
Full
Full
Not supported
3D Viewer
Advanced
Advanced
Basic or no preview
3D Editor
Advanced
Advanced
Not supported
Security & Privacy
100% Local No upload needed
SSL + Auto-delete
Files often stored on servers
Cross-Platform
Windows, macOS, Linux
All devices
Web only, limited mobile UX
Suitable for
Professionals and engineers
Quick online conversions
Not recommended

Ready to Convert Your PLY Files?

Join thousands of engineers who trust MeshInspector for their 3D file conversion needs. Start converting today with no limits and professional results.

How to Convert PLY to STL with MeshInspector Software

Preoccupied with preparing 3D data? The MeshInspector program will address your needs by converting PLY files to STL. With MeshInspector, you are well-positioned to easily change and export your model as a single STL file, while being perfectly and universally equipped to preserve precision and proper mesh integrity.

1

Opening PLY Files

To start converting a PLY to STL, launch the MeshInspector program: navigate to the ‘Home’ tab. Click on ‘Open Files’ for loading 3D data.

2

Browsing PLY Files

In the dialog window that appears, locate your .ply file. Once your PLY is found, select it by clicking ‘Upload’ or by double-clicking.

3

Viewing PLY Files

After loading, the file will appear as a triangulated surface mesh, ready for subsequent operations. MeshInspector supports all data from PLY files.

4

Exporting Components

When the PLY model is fully loaded and can be examined, your next step is to select what you want to export in the Scene Tree. For this purpose, make use of the ‘Export’ icon on the top toolbar.

5

Combining for Export

In case your PLY contains multiple elements, merge them before exporting. In the Scene Tree, select and group them. Then right-click on the group. Choose ‘Combine Subtree’ to unite them.

6

Setting STL Format

Once you hit ‘Export,’ ‘Save File’ will appear. You can rename the file if necessary and select the desired output format in the ‘Extension’ dropdown list. Opt for .stl. The MeshInspector program will export the object (as a binary STL file).

7

Inspecting the STL Size

To validate your converted STL file, reopen it in MeshInspector. Go to ‘Inspect’ and select ‘Bounding Box.’ Our advanced and feature-rich software will calculate and display dimensions. This will allow you to verify that proper scaling was secured.

8

Adjusting the STL Size

Need to fine-tune the model’s scale? Head to ‘Transform’ under the ‘Information’ panel. Adjust the scaling slider to enlarge or shrink the mesh. Confirm your changes by clicking the checkbox. The updated size and volume will be applied.

9

Finding ‘Mesh Healer’

Before completing your PLY-to-STL conversion scenario, it is a must to provide for the mesh integrity. Switch to the ‘Mesh Repair’ tab and open ‘Mesh Healer.’ This tool analyzes geometry errors and prepares the model for repair. Fixing these prevents problems.

10

Fixing the STL

Choose between two repair modes. 'Local Repair' detects and fixes specific issues, e.g., disconnected elements, small holes, etc. You can also activate ‘Thin Walls’ and ‘Undercuts’ for printability. ‘Auto Repair' rebuilds entire models, for complete restoration.

User Testimonials

4.9/5
out of 5 based on 2,547 reviews

Gabriele Impellizzeri

R&D Manager

MeshInspector significantly helped us in streamlining all of our 3D printing mesh modeling tasks thanks to its ability to fix, smoothly decimate and operate on our large-size lattice meshes in a fast and effective way.

Erick Geisler

Chief Technical Officer

"MeshInspector has completely transformed our workflow. It\'s faster, more efficient, and offers incredible value. The responsiveness of the development team and the quality of the software have given us a significant edge over our competitors."

Peter Sekula

Chief of Operations | Matterfield

"MeshInspector proves invaluable for 3D artists with its swift decimation and powerful Python API, streamlining workflows and enhancing efficiency. Its automation capabilities render it indispensable in the realms of gaming and VFX."

Daniel Gelep

3D Scanning Representative, Susteni AS

"It's the fastest program I\'ve used so far, and I can now do 150 scans in just 2 days instead of 1.5 weeks."

Ruedger Rubbert

Chief Technology Officer, Brius Technologies Inc

"With MeshInspector MeshLib we were able to automate many of our workflow processes, thanks to its advanced, modern, and efficient dental and geometry oriented algorithms, covering many of our orthodontic-related tasks: CT and intraoral scan segmentation, voxel and Boolean operations, editing, aligning, visualization, inspection, and import/export of mesh objects. We use the versatile MeshInspector MeshLib API, both in production and R&D for fast prototyping and testing of our ideas."

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