STL to STEP Converter

Batch convert stl files to step online. Change stl to step on Windows, Mac, iPhone and Android in 2 clicks.

Select files for conversion or drag and drop them to the upload area.
Your files are securely protected and available only to you.
All files are automatically deleted from our servers after 1 hour.

How to convert STL files to STEP online?

Step-by-step instructions for converting stl files to step

Upload STL-file

Click "Choose File" button to select a stl file on your computer. STL file size can be up to 100 Mb.

Convert STL to STEP

Click "Convert" button to start conversion.

Download your STEP

When the conversion process is complete, you can download the STEP file.


  • ❓ How can I convert STL to STEP?
    First you need to add file for conversion: drag and drop your STL file or click the "Choose File" button. Then click the "Convert" button. When STL to STEP conversion is completed, you can download your STEP file.
  • ⏱️ How long does it take to convert STL to STEP?
    Mesh conversion is pretty fast. You can change STL to STEP in a few seconds.
  • 🛡️ Is it safe to convert STL to STEP on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including STL to STEP) is absolutely safe.
  • 💻 Can I convert STL to STEP on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our STL to STEP converter works online and does not require software installation.

Information about STL and STEP file formats

Full name Stereolithography File Format Standard for the Exchange of Product model data
File extension .stl .step
MIME type
Developed by 3D Systems ISO
Type of format
Description STL is a file format native to the stereolithography CAD software created by 3D Systems. Many other software packages support this file format. It is widely used for rapid prototyping, 3D printing, and computer-aided manufacturing. STL files describe only the surface geometry of a three-dimensional object without representing color, texture, or other common CAD model attributes. The STL format specifies both ASCII and binary representations. Binary files are more common since they are more compact. STEP is a neutral file format that allows the transfer of files between different CAD software. The development of STEP started in 1984 as a successor of IGES, SET, and VDA-FS. STEP format (Standard for the Exchange of Product Data) is an ISO standard exchange format. It is used for representing three-dimensional data in a format that multiple programs can recognize. ISO standard number: 10303.
Technical details An STL file describes a raw, unstructured triangulated surface by the unit normal and vertices (ordered by the right-hand rule) of the triangles using a three-dimensional Cartesian coordinate system. All STL coordinates were required to be positive numbers in the original specification, but this restriction is no longer enforced, and negative coordinates are commonly encountered in STL files today. As a result, STL files contain no scale information, and the units are arbitrary. STEP formats can be used to exchange data between CAD, Computer-aided manufacturing, Computer-aided engineering, Product Data Management/EDM, and other CAx systems (Computer-aided technologies). STEP is the same as STE and STP. The disadvantage is that a STEP file is not editable, and the design tree of the model is not available either.
File conversion STL conversion STEP conversion
Associated programs TurboCAD, GOM Inspect, STL Viewer, Geomagic Explorer, Parametric Technology Creo, Dassault Systemes CATIA, KeyCreator, MeshLab, SolidWorks, Pro/Engineer, CloudCompare, Blender, AutoCAD, 3D Studio Max, Autodesk Inventor, Mechanical Desktop Dassault Systemes SolidWorks, AutoCAD, SolidWorks eDrawings Viewer, Unigraphics, Autodesk Inventor Fusion, IronCAD, IMSI TurboCAD, Autodesk Inventor Fusion, Rhinoceros, CATIA, Siemens Solid Edge, STEP Tools STEP File Browser, Kubotek USA KeyCreator, Free CAD.