Free Online STEP to OBJ Converter

You can use our STEP to OBJ conversion tool to quickly and easily convert your 3D model files for free. You may upload up to 20 files at one time, and our batch STEP to OBJ converter will process each 3D model and present you with a download link for each file once completed.

Select File(s)

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your STEP file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted STEP file before this time.

Our 3D model STEP to OBJ tool will load your STEP file and, where supported, attempt to extract all the relevant 3D features, such as geometry, textures, and animations. To access the 3D conversion configuration options, click the button when you have selected your files. The current options support the ability to voxelize your 3D model and more.

How to Convert your STEP to OBJ Online?

Here are two simple steps to convert your STEP to OBJ using our fast and free STEP converter tool.

Upload your STEP file

Click the "Upload a STEP File" button, then select a STEP to upload. The maximum file size is 100MB.

Download your OBJ

Click the download link to receive your OBJ file.

Frequently Asked Questions

How can I convert my STEP file to OBJ?

First, click the "Upload..." button and select your STEP file to upload. Your STEP file will be uploaded to our servers. When the STEP to OBJ conversion has completed, you can download your OBJ file right away.

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

We aim to process all STEP to OBJ conversions as quickly as possible; this usually takes around 5 seconds; however, this can be longer for certain files, so please be patient.

How accurate is the STEP to OBJ conversion?

We aim to provide the best conversion experience. Our tools are under constant review and development, with new features being added every week.

How does converting STEP to OBJ work?

In order to successfully convert an STEP formatted file to the OBJ format, our converter tools will perform several initial checks to ensure the file provided is indeed an STEP file. There are many files out there where the file type extension does not match the data contained within the file. Along with these file type checks, our tools will do additional checks to ensure the file is correctly formatted to match the provided file type. There are many tools out there that do not always create STEP files to the exact specification.

Take your STEP file

The STEP file format is a text-based format, meaning its contents are human-readable, making STEP files straightforward to edit in simple text editors. Within this text-based format are the core elements that make up the 3D model, including points, lines, edges, faces, and more. To ensure efficient conversions, our tool will check all data that is contained within the STEP file and remove any information that is duplicated. STEP files are notoriously slow to process, even on high-end computer systems, which is why our STEP to OBJ converters have been hand-optimized for speed making our STEP converters the fastest available.

Convert the data from STEP to OBJ

Now that the data from the STEP file has been processed, our tool can apply any conversion specified options, such as enabling Voxel mode, and with these applied, prepare the data to be converted to the final OBJ file format. Part of this process ensures checking the capabilities of the OBJ format and removing any data that cannot be represented.

Save to the OBJ format

At this point, the STEP to OBJ conversion tool will have the 3D model in a state that is ready to be transferred to the OBJ format. Our tool creates the OBJ file, ensuring all the model data is present and is formatted to match the OBJ file specification to ensure the file opens in compatible OBJ file editors.

File format information for STEP and OBJ

Extension	STEP
Full Name	STEP-File
Type	3D Model
Mime Type	application/octet-stream
Format	Binary
Opens With	CAD Assistant

STEP files are a 3D file format used to store complex 3D object definitions in a standard format to facilitate data transfer between compatible 3D modelling and CAD (Computer Aided Design) applications. In addition to storing 3D object data, the STEP format can store additional information such as materials, tolerances, and other relevant data.

The STEP format was first released in the early 1990's, has become a standard for 3D object storage, and is used in automotive, electronics, and other industries. STEP files can be opened in most modern CAD applications and can be imported into many 3D modelling applications too.

The file content is ASCII text-based and conforms to the ISO-10303-21 standard. The 3D object contained within the STEP file is described using a combination of points, lines, and edges. Due to the format being ASCII text, complex objects can lead to large file sizes. In addition to large file sizes, some complex STEP files can take a long time to open within editing applications, even on a high-spec, modern computer.

STEP Converter Capabilities

When converting 3D model or mesh files using our STEP converter, we will attempt to convert colour materials into a suitable format for use in the converted file.

Extension	OBJ
Full Name	Wavefront
Type	3D Model
Mime Type	text/plain
Format	Text
Opens With	MeshLab, CAD Assistant, DAZ Studio

The OBJ file format is a 3D graphics file format used to define complex 3D models, including geometry, materials, and textures. OBJ files are text files, making them human-readable and easy to modify by hand. The downside to this ease of readability is that the files can become rather large when dealing with large or complex 3D models.

As mentioned, the OBJ format stores not only 3D model geometry but also materials and textures. These materials are usually defined in a separate file with the MTL file extension and specify geometry rendering details such as diffuse and specular colour, transparency, and much more.

The OBJ material file can also reference external texture files. These are usually JPEG or PNG files; however, these can be older formats, such as TGA. Where materials are used, the OBJ file will also contain material names preceding the geometry faces they should be applied to. If textures are referenced, the geometry will also contain texture coordinates (UV) for each vertex.

OBJ Converter Capabilities

When converting your STEP to OBJ, our tool will attempt to accurately convert any colour or material information.

Information for converting from STEP to OBJ

Your STEP file will be converted to a OBJ file using our unified 3D model and mesh conversion tool. Our STEP 3D tool performs accurate conversions of 3D elements such as vertices, faces, normals, and relevant material information. As both STEP and OBJ support colour material information, our tool will also attempt to convert the colour information.