Free Online STEP Converter

This is our fast and free file converter, specializing in converting your STEP 3D model files. You can convert your STEP files to a number of different formats, whether that be another 3D model format or an image. Our STEP converter can handle the most popular formats. Our STEP converter can also batch process up to 20 files at a time.

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 STEP converter tool supports converting to the following file types:

To start, please click the button above and select the 3D model STEP files you wish to convert. Once you have selected these, you can specify what you would like each file to be converted to. This could be another 3D model format, or another format from our extensive list. Once the target formats have been set, you can apply any configurations (such as applying the built-in voxelizer) by clicking the button.

How to Convert your STEP file Online?

Here are 3 simple steps to convert your STEP file using our fast and free STEP file converter tool.

Upload your STEP file

Click the "Select File(s)" button, then select an STEP file to upload. The maximum file size is 100MB.

Select file type

Select the file type to convert your STEP file to using the drop-down list of available types.

Download your file

Click the download link to receive your converted file.

Frequently Asked Questions

Is it free to use the STEP conversion tools?

Yes! Our STEP conversion tools are 100% free to use.

Are there any STEP conversion usage limits?

No, you can convert as many files as you wish. We do not impose any conversion limits on our STEP conversion tools.

How long does it take to convert my STEP?

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

What does the STEP conversion process involve?

Once your STEP file has been uploaded and we know the file format you wish to convert it to, our bespoke conversion software will convert your STEP and make it available for you to download with a unique download URL.

Is it safe to convert my STEP on

Yes, of course it is! Your STEP, once converted, is deleted 1 hour after upload, and the download link will expire after this time.

Can I convert my STEP on Linux, Android, iOS or Mac OS?

Yes! Our STEP conversion tools will run on any system with a modern web browser.

Is there any support for me when using the STEP tool?

If you are having difficulty converting your STEP, you can contact us, and we will try to help where possible.

STEP file format information

Full NameSTEP-File
Type3D Model
Mime Typeapplication/octet-stream
Opens WithCAD 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 modeling 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 modeling 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

Our STEP converter can both convert from and to STEP files, and our developers are working to improve our STEP conversion tools in future versions. Our STEP 3D Model/Mesh tool does not support any color material data contained within STEP files, so the converted file will not contain any color information.

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