Free Online STEP to STL Converter

Please note: Your STEP file, once uploaded to our server will be deleted 1 hour after upload so please download your converted STEP file before this time.

How to Convert your STEP to STL Online?

Here are 2 simple steps to convert your STEP to STL using our fast and free STEP converter tool.

Upload your STEP file

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 STL

Download your STL

Click the download link to receive your STL file.

File format information for STEP and STL

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

The STEP file format is a 3D format defined in 1994 and used to store 3D objects for use in Computer-aided design (CAD) applications. STEP files are text-based formatted files containing one instance per line.

Although STEP 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.

STEP Converter Capabilities

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.

ExtensionSTL
Full NameStandard Triangle Language
Type3D Model
Mime Typeapplication/vnd.ms-pki.stl
FormatText
Opens WithBlender, MeshLab, CAD Assistant, DAZ Studio

The STL file format has its roots in the 1980's and is the native file format for 3D Systems stereolithography CAD software. The format defines a triangulated mesh with vertices and faces and is a popular format for sharing 3D printable model files.

There were several formats that attempted to extend the STL format namely SolidView and VisCAM whose formats included limited 15-bit color information for each mesh face which is often ignored by most modern 3D software. The STL format can be either Text or Binary, our tools will support both formats.

STL Converter Capabilities

Our 3D conversion tool does not support color/material information in STL files so your file will not contain any color information.

Information for converting from STEP to STL

Your STEP file will be converted to a STL 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. Our tool will not attempt to transfer any color information if present in your STEP file, your final 3D model will contain geometry data only.

Frequently Asked Questions

How can I convert my STEP file to STL?

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

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

We aim to process all STEP to STL 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 STL conversion?

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