Convert Parasolid
to OBJ.

Updated 2026-10-06

To convert Parasolid to OBJ, drop the .x_t or .x_b file into the converter below and download the .obj, ready for Blender, a game engine or a renderer. The exact surfaces are triangulated to within 0.02 mm with edges kept crisp. 5 conversions a day are free with no account, and nothing is installed.

5 conversions a day with no account. No card, no install.

No account needed
Drop a Parasolid file.x_t / .x_b · up to 200 MB

On our servers. No account: deleted within 24 hours. Signed in: kept until you delete them. Never shared or used for training.

ResultTessellated

Edges are sampled first, so chamfers, fillets and holes come through crisp. Default tolerance: 0.02 mm chord deviation, 0.1 rad angle — fine enough to print directly.

Tessellation is one-way — keep the Parasolid file if you will edit the shape later.

ChangesParasolid → OBJ

What changes between Parasolid and OBJ

A Parasolid file is an engineering solid: exact surfaces, exact edges, nothing approximated. OBJ is a graphics mesh: polygons, plus optional texture coordinates and material references, with no notion of a solid or of a true curve.

So the conversion turns every face into triangles. Flat faces cost almost nothing; curved ones become fans of small facets, close enough to the true surface (0.02 mm) that a render shows clean curves and sharp edges rather than lumps. Edges are sampled before the faces are filled in, so a chamfer or a hole keeps a clean outline.

What does not survive: the exact geometry itself, any feature history (there was none in the transmit file) and anything a CAD system would need to edit the part. OBJ is the right container for visualisation and texturing. For 3D printing, STL or 3MF is the more usual choice; for another CAD system, STEP.

HowThree steps
  1. Drop your .x_t file above — up to 200 MB without an account.
  2. OBJ is already selected as the output.
  3. Download the .obj. Without an account, files are deleted within 24 hours; signed in, they are kept until you delete them.
FormatsWhat you are holding

Parasolid transmit file (.x_t / .x_b)

Parasolid is the modelling kernel under SOLIDWORKS, Solid Edge and NX, and a transmit file is its exact solid geometry. Between systems that share the kernel it often survives better than a neutral format. .x_t is text, .x_b is binary; both hold the same solid.

Someone in a Siemens or SOLIDWORKS shop sent you an .x_t and nothing you have opens it.

Wavefront OBJ file (.obj)

OBJ is a plain-text mesh format from graphics. Unlike STL it keeps named groups, texture coordinates, materials and polygon faces, which makes it the usual handover into rendering and texturing tools. It is still a mesh, not a solid.

The destination is a renderer, game engine, texturing tool or visualisation pipeline.

Questions10 answered
Can Blender open an .x_t?
Not out of the box. Blender reads OBJ, glTF, STL and others but not Parasolid, which is why converting to OBJ or glTF is the usual route.
How do I convert x_b to OBJ?
Drop the .x_b on this page; it converts exactly as an .x_t does, to the same OBJ.
Will textures or colours come across?
No. The OBJ carries the shape; apply materials in the renderer or engine you are bringing it into.
What if the Parasolid file will not convert?
A few surface types, variable-radius blends among them, are not rebuilt yet. When the converter meets one it stops and names it rather than writing a damaged file, and the attempt does not count against your free conversions. Ask the sender for a STEP export instead; every Parasolid-based system writes one.
Is the Parasolid to OBJ converter free?
Yes. 5 conversions a day with no account and no card. A free account raises the limit and adds 25 credits.
How accurate is the OBJ mesh?
The exact surfaces are triangulated into a OBJ mesh. Edges are sampled first, so chamfers, fillets and holes come through crisp. Default tolerance: 0.02 mm chord deviation, 0.1 rad angle — fine enough to print directly. Tessellation is one-way — keep the Parasolid file if you will edit the shape later.
Does it read both .x_t and .x_b?
Yes. Text (.x_t) and binary (.x_b) hold the same solid, and both convert here.
How big a file can I convert?
To a mesh format like STL: 300 MB with a free account, 200 MB without one. To STEP, Parasolid or SLDPRT: 140 MB, because rebuilding a solid takes about twice the memory of writing a mesh. Maker and Studio convert up to 830 MB and 380 MB — a large conversion on a paid plan gets the server to itself.
Is it safe to upload my Parasolid file?
Files travel encrypted and are processed by machine on our own servers — no third parties, no ads or trackers, no AI training.
Is my Parasolid file deleted after converting?
Without an account, the upload and the result are deleted within 24 hours. With an account, both stay in your files until you delete them; deleted files leave our servers within 24 hours.
Beyond convertingSame file, four workspaces

Keep the part open: fill it with a lattice, check it with FEA, texture a surface, or slice it into cut-ready sheets. These workspaces are in early access — create an account, then apply from inside the app.

Create free account See pricing

AlsoOther ways in
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Going the other way? Convert OBJ to Parasolid.

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