Open it in an
older SolidWorks.

A part saved in a newer SolidWorks won't open in an older one. Save it for SolidWorks 2025 or 2024 as a native .SLDPRT, or for any older release as a STEP.

2 solid-geometry conversions a day with no account. Parts only, no SolidWorks needed.

No account needed
Drop a SolidWorks part.sldprt · parts only · 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.

Releases8 covered
Open it inYou getSolidWorks' own Save AsInternal no.
SolidWorks 2025Native .SLDPRTFrom 202618000
SolidWorks 2024Native .SLDPRTFrom 2025 or 202617000
SolidWorks 2023STEP · native comingFrom 2024 or 202516000
SolidWorks 2022STEP · native comingFrom 202415000
SolidWorks 2021STEP · native comingNo release reaches it14000
SolidWorks 2020STEP · native comingNo release reaches it13000
SolidWorks 2019STEP · native comingNo release reaches it12000
SolidWorks 2018STEP · native comingNo release reaches it11000
ResultUsually exact surfaces

SolidWorks 2025 and 2024

A native .SLDPRT for that release, named like bracket_SW2024.SLDPRT, holding the part's solid as one imported body, usually on its own exact surfaces.

SolidWorks 2023 and older

A STEP, which every release opens as a solid body, usually on the part's own surfaces. Native files for these releases are coming.

No feature tree: the finished shape, not the steps that built it. Parts only — assemblies and drawings are not supported yet.

Your fileWhich release saved it
  1. In Windows File Explorer, right-click the part, then Properties and Details: SW Last saved with names the release.
  2. For a folder of parts, add SW Last saved with as a column in the Details view.
  3. Or drop it above. The converter reads it and says Saved in SolidWorks 2026.
ComparedSolidWorks' own routes
  • Future Version — from SP5, a release opens a part saved one release later, read-only.
  • Save As previous version — since 2024, two releases back with features intact; needs the newer seat and an active subscription, and refuses features new to it.
  • A neutral file — someone with the newer release exports a STEP for you.
  • Here — no SolidWorks and nobody else: any newer part, from your side.
Questions7 answered
Why won't my SolidWorks open this part?
It was saved by a newer release. SolidWorks never edits a newer file; from SP5 it can view one saved a release later, read-only.
Can I downgrade a SolidWorks file?
A part, yes. SolidWorks 2025 and 2024 get a native .SLDPRT; 2023 and older get a STEP, which every release imports. Usually the part's own surfaces, never a feature tree.
Which releases get a native part?
SolidWorks 2025 and 2024, from a part saved in any newer release. Native files for 2023 and older are coming.
Do I need SolidWorks, or someone with the newer release?
No. It runs on our servers, from your side: no SolidWorks install, and nobody with the newer seat.
Is the feature tree kept?
No: an imported solid, usually on the part's own surfaces. Only SolidWorks' own Save As keeps features, from the newer release and at most two releases back.
Does it work for assemblies or drawings?
Not yet — parts only. An assembly holds no part geometry (each part is its own file), and drawings are not supported.
Is it free?
Yes to start: 2 solid-geometry conversions a day with no account, and 4 a day with a free one; past that each costs 4 credits, and Maker includes them. Checking which release saved a part is free.

SOLIDWORKS® is a registered trademark of Dassault Systèmes SolidWorks Corp. MeshWeave is an independent tool and is not affiliated with, endorsed by, or sponsored by Dassault Systèmes.