InStep is a software application that converts from various file formats including STL into STEP format. The software has been
redesigned from the original stl2step application and has grown into a fully flegded tool that includes numerous useful error correction,
graphics and user interaction features.
Software Version 2.3
InStep is a software application that converts from various file formats including STL into STEP format. Since its early days when it was
known as STL2STEP, it has been redesigned and has grown into a fully flegded tool that includes numerous useful error correction, graphics
and user interaction features that make it much more than a mere file converter.
InStep supports import & export of the following formats:
- STL (Ascii/Text and Binary)
- DAE (for triangulated bodies)
- GDML (with limited definition of domains/materials)
In addition, the FE module is set up to read and write the mesh components of the following Finite Element formats:
- OUT, Poly
- MSH (Gmsh format)
- MSH (Fluent R13, Export only)
Interaction between FE meshes and CAD meshes is enabled by allowing the surfaces of meshes to be exported as geometry or faceted geometry be
used as surface meshes.
Export to the STEP format has been greatly refined and produces smaller files than in the previous version.
For the Surface/CAD meshes, a number of tools provide feedback about the data, planar combination, facet normal switching and hole closure.
For the FE meshes, tools provide feedback of the data, surface extraction, removal of surface or volume meshes and removal of unused vertices.
Just looking for a STL/OBJ/IBF 3D-Viewer? Take a look at our free STL viewer
(latest stable version: April 19th, 2016, version 2.3.11, Build 185)
The application can be run either using a license (5-day trial or purchased) or, in Demo mode which allows only a few hard coded sample files to
be used to test out the application without limitation (i.e. at the FE level). See the FAQs page for some additional information about the licenses
and application use. Install and start up the application to select the option that works best for you.
Virtual Machine Option
If you do not want to download/install the application (or cannot for some reason), you can run the application in a
using the following link. Note that you will not be able to import/export any files and only try a few select test files:
Mirrors / Reviews
Use the download button or link above to download directly from our site or alternatively, you can download from a mirror (check the build
numbers to make sure they are up to date):
We offer four levels of licensing each with different prices and features.
The Purchasing Page contains a
feature price grid that will help you decide which license is right for your needs. The application also
allows you to request a free, 5-day trial license: Install the application and chose 'request trial license'
from the popup menu
Help & Further Information
To help our users get the most out of InStep, we offer
a Help Page. Also see
our Tutorials page for short video tutorials on the use of the application.