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Convert Your 3D Mesh/Model STP Files to PLY

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Our free and fast tool will convert most 3D mesh or STP (STEP-File) model files to a standard PLY (Stanford Triangle Format) file that can then be edited further in most popular 3D editing packages such as Blender or 3D printed without any further processing. Our conversion tool can also batch convert multiple STP files; up to 25 files at a time can be converted.

To convert your STP file, click the Upload button above and select the file to convert. Once selected, the file will be converted to a PLY file and will be ready for download shortly afterwards. For more information about the STP to PLY conversion process, see the conversion information section below.

How to Convert your STP to PLY Online?

Here are two simple steps to convert your STP to PLY.

Upload a STP

Click the "Upload a STP File" button and select a STP to upload. The maximum file size is 50MB.

Download your PLY

Click the download link once completed to receive your PLY file.

Frequently Asked Questions

How can I convert my STP file to PLY?

First click the "Upload..." button, select your STP file to upload. Select any configuration options. When the STP to PLY conversion has completed, you can download your PLY file straight away.

How long does it take to convert my STP to PLY?

We aim to process all STP to PLY conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.

How accurate is the STP to PLY conversion?

We aim to create the most accurate conversions with our tools. Our tools are under constant development with new features and improvements being added every week.

Is it safe to convert my STP to PLY on ImageToStl.com?

Yes, of course! We do not store the STP file you submit to us. The resulting PLY file, once created is deleted 15 minutes after upload and the download link will expire after this time.

Can I convert STP to PLY on Windows, Linux, Android, iOS or Mac OS?

Yes! Our STP to PLY tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.

What if I am using an Ad Blocker, will that affect things?

Yes. Although you can use an Ad Blocker, if you like our STP conversion tool please consider white-listing our site. When an Ad Blocker is enabled there are some conversion limits on some of our tools and processing/conversion times will be longer.

What format is my PLY file saved as?

The PLY file generated by our tool will be in the binary little endian format.

I have several STP files; can I batch convert my STP to PLY?

Yes! Our STP tool supports full batch conversions. You can upload up to 25 and STP files at a time. Our tool will convert them all as quickly as possible. Once completed, you can either download the PLY files individually or download them all in a single ZIP file.

Comparing STP and PLY Features

 

STP Features

  • Mesh Geometry (Vertices and Faces)
  • Vertex Normals
  • Face Normals
  • Vertex Colors
  • Face Materials (Excluding textures)
  • Textures
  • Point Cloud
  • Multiple Objects Per File
  • Object Transforms (Translation, Rotation, and Scale)
  • Bones/Joints
  • Animations
  • Suitable for 3D Printing

PLY Features

  • Mesh Geometry (Vertices and Faces)
  • Vertex Normals
  • Face Normals
  • Vertex Colors
  • Face Materials (Excluding textures)
  • Textures
  • Point Cloud
  • Multiple Objects Per File
  • Object Transforms (Translation, Rotation, and Scale)
  • Bones/Joints
  • Animations
  • Suitable for 3D Printing

File Format Information for STP to PLY

ExtensionSTP
Full NameSTEP-File
Type3D Model
Mime Typeapplication/octet-stream
FormatBinary
ToolsSTP Converters, 3D Model Voxelizer, Create STP Animation, Text to STP, STP Viewer
Open WithCAD Assistant

Description

The STP file format, which can also be found with the extension STEP, is a 3D format defined in 1994 and used to store 3D objects for use in computer-aided design (CAD) applications. STP files are text-based, formatted files containing one instance per line.

Although STP files are widely supported by most CAD applications, the format does have its limitations, such as the necessity to read the complete file into memory in order to parse the contents, and due to the textual storage of information, the files can be quite large.

STP Notes

PLY files, when imported, will be converted to 3D geometry comprising vertices and faces. If the PLY file contains color information, this will be converted where possible.

Supported Features

  • Mesh geometry
  • Mesh colors
ExtensionPLY
Full NameStanford Triangle Format
Type3D Model/Point Cloud
Mime Typeapplication/octet-stream
FormatText & Binary
ToolsPLY Converters, 3D Model Voxelizer, Create PLY Animation, Compress PLY, Text to PLY, PLY Viewer
Open WithBlender, MeshLab

Description

The PLY format is a 3D model format originally developed and released in 1994, with its primary use being to store three-dimensional data from 3D digital scanners. The format known as the Polygon File Format or the Stanford Triangle Format can be either a binary or text-based format.

The file format stores 3D geometric information such as vertices, faces, vertex normals, color, and other custom data. The format is still in use, with many PLY models available to download, and PLY files can be loaded into most popular 3D applications, such as Blender.

PLY Notes

PLY files support per-vertex color information. If your uploaded model contains color information, our tool will attempt to save this in the PLY file at the end of the conversion process.

Supported Features

  • Mesh geometry
  • Vertex colors
  • Binary and text versions are supported when converting from PLY
  • Binary-only version when converting to PLY

How does it work?

Converting from the STP file format to PLY can be a complex process, and any tool used for this conversion process needs to be able to handle a variety of data conversion tasks as well as identify any defects within the 3D model and fix them. Here we will explain the conversion process used by our tool to accurately convert your STP file to a valid PLY 3D model. Let's start with the conversion process, which involves the following steps:

Step 1: Read the Source STP File

In its simplest form, a STP file is a human readable text file file containing 3D data such as shapes, surfaces, curves and other geometric data. When combined, these make up the 3D model you see on your screen.

For more information regarding the STP file format, please see this great article that goes into a lot of detail explaining the STP format.

Step 2: Process File Data

With the STP file data read, our tool generates an internal representation of the full 3D model and will attempt to fix any geometry issues encountered. Along with repairing any issues with the 3D model, the tool will remove any duplicated vertices and prepare the model for exporting to the PLY format.

Step 3: Saving to the PLY Format

With the conversion process entering its final stages, our tool now needs to take the in-memory 3D model we have created in step 2 and convert it to the PLY format.

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