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Convert Your 3D Mesh/Model STP Files to OBJ

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Our free and fast tool will convert most 3D mesh or STP (STEP-File) model files to a standard OBJ (Wavefront) 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 OBJ file and will ready for download shortly afterwards. For more information about the STP to OBJ conversion process see the conversion information section below for more information.

How to Convert your STP to OBJ Online?

Here are 2 simple steps to convert your STP to OBJ.

Upload a STP

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

Download your OBJ

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

Frequently Asked Questions

How can I convert my STP file to OBJ?

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

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

We aim to process all STP to OBJ 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 OBJ 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 OBJ on ImageToStl.com?

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

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

Yes! Our STP to OBJ 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.

Will the OBJ file retain the textures from my STP file?

Yes! If your STP file contains textured geometry, the texture image files along with the texture coordinates (UV data) will be exported with the final OBJ file.

I have several STP files, can I batch convert my STP to OBJ?

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

How does it work?

Converting from the STP file format to OBJ 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 OBJ 3D model. Lets 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.

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 ready for exporting to the OBJ format.

Step 3: Saving to the OBJ Format

The OBJ format has been around for many years and has become a standard format for 3D modelling. Most 3D modelling software can open OBJ files which means our tool now needs to take the in-memory 3D model we have created in step 2 and convert this to the OBJ format.

File format information for STP to OBJ

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

Description

The STP file format 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 text storage of information the files can be quite large.

STP Notes

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

Supported Features

  • Mesh geometry
  • Mesh colors

Description

The OBJ file format originally created by Wavefront Technologies and later adopted by many other 3D software vendors is a simple text-based file format for describing 3D model/geometry. This data can include Vertices, Faces, Normals, Texture Coordinates and references to external Texture files.

As the format is text-based it is relatively straight-forward to parse by 3D modelling applications. A downside of the text-based format is the files can be rather large compared to similar binary formats such as STL and compressed files such as 3MF.

OBJ Notes

Our tool will save any material and texture files separately, these additional files will be included with your final OBJ file at the time of download.

Supported Features

  • Mesh geometry
  • Materials (Via a MTL file)
  • Textures (PNG, JPG, TGA formats)

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