JT2Go — The Complete Guide: Free Viewing of JT and Parasolid Files Without CAD
JT2Go is a Siemens 3D viewer for JT files — an ISO format for model visualisation — and also for Parasolid, Solid Edge, STEP AP242 and PLM XML. JT is common in automotive and machinery supply chains, so many suppliers run into it.
JT2Go
Siemens Digital Industries Software
A free viewer for JT and Parasolid files with measurement, sections and PMI display — common in automotive and machinery supply chains.
Get it from the vendorWhat you get
- Product structure — navigate the assembly tree and hide components.
- Measuring — distances and angles on the model.
- Sections — cut the model to show the inside.
- PMI — display the dimensions, tolerances and manufacturing notes stored in the model.
- Several platforms — a Windows desktop version, a browser version and mobile apps.
Licence and what to know
JT2Go is freeware, not open source. Siemens describes it as a no-charge viewer, and the official site states no restriction on the type of use; use is subject to the Siemens licence terms. It does not allow geometry editing.
Related tools
For an open viewer for STEP and IGES files — Mayo. For DWG and Autodesk formats — Autodesk Viewer. For reviewing combined models — Navisworks Freedom.
Mayo
Fougue
3D CAD viewer and converter — STEP, IGES, BREP, STL, glTF and OBJ — with measuring tools and clip planes.
Get it from the vendor
Autodesk Viewer
Autodesk
A free online viewer for more than 80 formats — DWG, RVT, IPT, STEP, SOLIDWORKS and more, right in the browser.
Get it from the vendor
Navisworks Freedom
Autodesk
A free viewer for NWD and 3D DWF coordination models — viewpoints, redlines and element properties for site and review teams.
Get it from the vendor
Online 3D Viewer
Online 3D Viewer project
Open STEP, IGES, IFC, STL, OBJ and more in the browser — files are processed locally, not uploaded to a server.
Get it from the vendorThe bottom line
If you receive JT models from a customer, JT2Go is the simple, free way to open, measure and understand them.