CAD & BIM file version converters

"Save it down to 2013" is one request; "downgrade this Revit model" is a different problem entirely. Each page below states plainly whether the version can be lowered, the exact procedure that works, and what the file loses on the way — no uploads, because none of these formats can be rewritten in a browser.

AutoCAD

Yes — DWG can be saved down, and it is free. AutoCAD's own SAVEAS, the free DWG TrueView (DWG Convert) or ODA File Converter all write older format codes without touching geometry.

Revit

Revit cannot save a native RVT or RFA to an earlier release. For Revit 2026 to 2025, recover a pre-upgrade copy or agree an IFC coordination exchange, drawing export or native rebuild. TaskBider provides guidance, not an RVT downgrade engine.

Civil 3D

Partly. The DWG container saves down like any AutoCAD drawing, but surfaces, alignments, profiles and corridors are Civil 3D objects — in an older release or plain AutoCAD they arrive as non-editable proxy graphics.

SketchUp

Current SketchUp saves versionless SKP files for supported versions; it no longer saves to older, unsupported SKP formats. Need a 2017 or 2020 file? Do not assume today's Save As can produce it. Use a current supported version, open the model in SketchUp for Web, or agree an exchange format with the recipient. This page provides compatibility guidance, not an online SKP downgrade.

SolidWorks

SOLIDWORKS 2024 onward can save parts, assemblies and drawings to either of the two previous releases with an active subscription. Review the Previous Release Check and resolve incompatible items. This is an in-application feature, not a TaskBider file converter or an unlimited downgrade.

3ds Max

Yes, within limits. 3ds Max's Save As can write a scene for a limited number of earlier releases (the dialog lists which). Further back than that, export FBX and rebuild materials.

ArchiCAD

Partly. ArchiCAD can save a project for the immediately previous version via Save As. Going further back means repeating that step in each intermediate release, or using IFC.

Tekla Structures

No native downgrade exists. Once a model is opened and saved in a newer Tekla Structures version it cannot be used in an older one; the working routes are IFC or a backup from before the upgrade.

Inventor

No downgrade exists. Inventor migrates files to the current release when they are saved, and older releases cannot open them. Use STEP, SAT or a pre-upgrade copy instead.

Navisworks

Usually yes. Navisworks' Save As lists the earlier NWD versions your release can write. For anything further back, re-append the original NWC files in the older release.

BricsCAD

Yes. BricsCAD saves in DWG, and Save As lets you pick an older DWG format version, so a newer drawing can be opened in an older BricsCAD or AutoCAD.

MicroStation

Yes, with limits. All MicroStation releases since V8 share the V8 DGN format, so most version problems come up when someone needs the old V7 DGN format or a DWG file. Both are Save As options.

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