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Rhino Converter — Every .3dm Version

Convert Rhino files between any two versions (Rhino 2 through 8) online. Free first conversion, no upload, no install — official OpenNURBS in your browser.

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All Rhino conversions

Pick the downgrade you need. Each page includes a dedicated converter and a version-specific guide.

Rhino 8 → 7Rhino 8 → 6Rhino 8 → 5Rhino 8 → 4Rhino 8 → 3Rhino 8 → 2Rhino 7 → 6Rhino 7 → 5Rhino 7 → 4Rhino 7 → 3Rhino 7 → 2Rhino 6 → 5Rhino 6 → 4Rhino 6 → 3Rhino 6 → 2Rhino 5 → 4Rhino 5 → 3Rhino 5 → 2Rhino 4 → 3Rhino 4 → 2Rhino 3 → 2

Why designers use our Rhino converter

No forward compatibility

Rhino 8 files don't open in Rhino 7. We rewrite the archive header so the target version recognises the file.

Runs in the browser

Your .3dm never leaves your computer. The conversion uses the official OpenNURBS WebAssembly build.

Preserves geometry

NURBS surfaces, curves, meshes, layers, blocks and materials survive the downgrade.

Works on every OS

Windows, macOS and Linux — all you need is a modern browser.