Blender Ruler: Measure Distance, Angles & Area in Blender
Egon Castle
What license does the add-on use?
Blender Ruler is licensed under GPL-3.0-or-later.
Can I change the hotkeys?
The built-in hotkeys are Shift + Alt + D for Distance, Shift + Alt + A for Angle, and Shift + Alt + R for Area. They can be changed from Blender's Keymap preferences by searching for the Blender Ruler operator names.
Does the add-on require external dependencies?
No. The extension is self-contained and uses Blender's Python, GPU, and scene APIs.
Which formats can I export?
CSV exports measurement data for spreadsheets and reports. JSON preserves a versioned measurement record that Blender Ruler can import again.
What is the difference between Create Geometry and Convert to Mesh?
Create Geometry can build curves, text labels, and point empties and can replace its previous generated output. Convert to Mesh creates independent editable mesh copies of the selected or all ruler paths. Both preserve the source measurement records.
Can I render the measurements?
Viewport overlays are not render geometry. Use Create Geometry to make curve lines, text labels, and optional point empties, or use Convert to Mesh to create editable beveled mesh paths. The generated scene geometry can be used with Eevee or Cycles like other scene objects.
Do measurements update when I move the measured geometry?
No. Ruler records store world-space points and are not linked to mesh topology. Create a new measurement after moving the relevant object or vertices.
Do measurements remain visible after I finish the tool?
Yes. Completed measurements are stored with the scene and drawn as persistent viewport overlays until you hide or remove them.
Which measurements can I create?
Interactive tools create distances, three-point angles, and multi-point areas. Additional Object/Edit Mode tools measure object bounds, object dimensions, distance between objects, selected edge length, and selected face area.
Where do I find the add-on after installation?
Open a 3D View, press N, and select the Blender Ruler sidebar tab.
Which Blender versions are supported?
Blender Ruler requires Blender 4.2 or later and has been tested with Blender 5.0.1. Later versions should not be advertised as tested until they have completed the viewport and smoke-test checklist.
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| Blender Extension Compatible | Yes |
| Published | about 2 months ago |
| Blender Version | 3.0 - 5.2 |
| Extension Type | Add-on |
| Render Engine Used | Blender-Internal, Cycles, Eevee |
| License | GPL |
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