DORCHESTER3D

Free Online STP to 3MF Converter

Here is our free to use STP to 3MF 3D model converter tool that will take your STP file and convert it to the 3MF format ready for loading into your favourite 3D modeling package. Our 3D model converter supports batch processing of your files and can convert up to 20 STP files at one time.

Drag and drop your files here to upload or click the button above.
A maximum of 20 files can be converted at once.

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

The STP to 3MF model conversion tool will analyse your STP file and convert its 3D mesh data including vertices, surfaces and where applicable vector normals and texture coordinates to the 3MF format whilst maintaining the structural accuracy of your original STP 3D model file.

File information for STP and 3MF

Full NameSTEP-File
ExtensionSTP
Type3D Model
Mime Typeapplication/octet-stream
FormatBinary

The STP file format, also known as ISO 10303-21, is a 3D file format used within the area of computer-aided design (CAD) as a way to exchange data between different applications. The STP format is essentially a plain text file containing commands used to describe the 3D object.

Due to the standardized nature of the format, there is support for importing STP files into many CAD applications. STP files can, however, become quite large, and some complex files can take a long time to import into a 3D project.

Mesh Geometry

The STP format is not a mesh-based format; converting a STP file to a mesh format is possible via most CAD applications via a tessellate function.

STP Converter Capabilities

As the STP format currently does not support the use of material colors when used by tool, your converted model will contain only the mesh geometry, material colors will not be transferred to your converted file.

Full Name3D Manufacturing Format
Extension3MF
Type3D Model
Mime Typeapplication/vnd.ms-package.3dmanufacturing-3dmodel+xml
FormatBinary

The primary purpose of the 3MF format is to store and transmit 3D models for 3D printing. The format is ideally suited to this due to its ability to store not only the 3D model but also additional metadata required for 3D printing an object, such as units of measurement, surface material characteristics, and more.

Mesh Geometry

The 3MF file format is a mesh-based format; more specifically, the mesh is stored as a series of triangles that, when combined, can represent any 3D object. The format can contain many 3D mesh objects in a single file.

3MF Converter Capabilities

As the 3MF format currently does not support the use of material colors in 3D models when created using our tool, your converted model will contain only the mesh geometry, material colors will not be transferred to your converted 3MF file.

How to Convert your STP to 3MF?

Here are two steps to convert your STP to 3MF using our free STP converter tool.

Upload your STP file

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

Download your 3MF

Click the download link to receive your 3MF file.

Frequently Asked Questions

How do I convert my STP to 3MF?

First, click the "Select File" button and choose your STP file. We will upload and convert your STP file. Once the conversion from STP to 3MF completes, use the provided link to download your 3MF file.

How long does it take to convert my STP file to 3MF?

We aim to process all STP to 3MF file conversions as soon as possible; this should take around 5 seconds; however, this may be longer for larger files.

Is the STP format suitable for 3D printing?

No. Most 3D printing slicer software will not support the STP format. It is recommended to convert your STP file to the STL format if you wish to 3D print it.

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