Free Online STP Converter

This is our fast and free file converter, specializing in converting your STP 3D model files. You can convert your STP files to a number of different formats, whether that be another 3D model format or an image. Our STP converter can handle the most popular formats. Our STP 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 STP file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted STP file before this time.
Our STP converter tool supports converting to the following file types:

To start, please click the button above and select the 3D model STP 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 STP file Online?

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

Upload your STP file

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

Select file type

Select the file type to convert your STP 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 STP conversion tools?

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

Are there any STP conversion usage limits?

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

How long does it take to convert my STP?

We aim to process all STP 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 STP conversion process involve?

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

Is it safe to convert my STP on

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

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

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

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

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

STP file format information

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

STP 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 STP format can store additional information such as materials, tolerances, and other relevant data.

The STP 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. STP 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 STP 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 STP files can take a long time to open within editing applications, even on a high-spec, modern computer.

STP Converter Capabilities

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

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