by Lauloque·Workflow
Images © Lauloque. Used for product review; image policy.
Convert Rotation Mode earns its place in the blender_extensions library as a focused animation utility: it changes bone rotation modes while keeping existing keyframes intact, sparing you from redoing poses by hand. The 1.5.1 release restored Blender 4.5 LTS support and fixed several conversion errors.
Convert Rotation Mode is a Blender add-on from Lauloque for changing the rotation mode of bones without losing existing work. Select one or more bones in Pose mode, pick the rotation mode you want them to use, and press the Convert button. The add-on scans through all the keyframes of the selected bones in the timeline and preserves the animation or poses you already made.
If you are unsure which rotation mode to use, the add-on includes a rotation modes cheat sheet, though the suggestions may vary from one rig or animation to another. Bones use two main coordinate systems: Blender's Y down, which you will most likely use, and X down, which comes up in cases like exporting to software that can only read X down. You can also customize which sidebar tab the panel appears in.
The current release, version 1.5.1, brings back support for Blender 4.5 LTS, adds more verbose developer logging, and fixes incorrect conversions along with an error that prevented conversion to Axis Angle. The add-on requests clipboard access to copy and paste bone transforms.
Convert Rotation Mode is best for blender animators and riggers who need to switch the rotation mode of bones without losing keyframed animation or existing poses.
Convert Rotation Mode is completely free to download and use.
Convert Rotation Mode lists compatibility with Blender 4.5 LTS and newer. Version 1.5.1 specifically brought support for Blender 4.5 LTS back to life, so that release is the baseline for the current version. If you are running an earlier Blender build, check the developer's page on GitHub for details on which versions are supported before installing. The add-on installs like other Blender extensions, either by dragging and dropping the file into Blender or by downloading it and installing from disk.
Convert Rotation Mode works from Pose mode. Select one or more bones, choose the rotation mode you want them to use, and press the Convert button. The add-on then scans through all the keyframes of the selected bones in the timeline and applies the change while preserving the animation or poses you already made. You can also customize which sidebar tab the add-on panel appears in, and a rotation modes cheat sheet is included if you are unsure which mode to pick.
Convert Rotation Mode is listed here as free and is released under the GNU General Public License v3.0 or later. For the current licensing terms and the latest version, check the developer's page on GitHub. The add-on is distributed through Blender's extensions platform, so you can add it by dragging and dropping the file into Blender or by downloading it and installing from disk. The GPL license also means the source code is available for you to inspect or modify.
Convert Rotation Mode requests one permission: clipboard access, used to copy and paste bone transforms. That is the only permission the extension lists. When you install it through Blender's extensions system, Blender surfaces this permission during installation so you can see what the add-on is able to access before enabling it. If you want to review the code behind it, the add-on is released under the GPL and its repository is linked on the developer's page.
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