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BLBlender

Iruler

by Nabat·Workflow

Images © Nabat. Used for product review; image policy.

Why we like it

Iruler earns a spot in the Blender library for pulling measurement, coordinate analysis, and unit conversion into a single overlay that updates live as you work. The 1.2.7 update added gap adjustment, and a demo video is available.

What is Iruler?

Iruler is an interactive measurement tool for Blender, built by Nabat for measurement visualization inside the viewport. It provides real-time distance tracking, coordinate analysis, and automatic unit conversion that adapts to your scene settings, updating measurements automatically as you work.

In Object mode, Iruler measures real-time distances between objects with ruler-style visualization, and tracks position vectors and displacement for object movement analysis. Edit mode adds vertex, edge, and face measurements. Component analysis reports X, Y, and Z distances alongside vector projections, while automatic metric/imperial conversion updates the moment you change scene units. The overlay system uses clean, readable labels intended to keep viewport clutter to a minimum.

Activation takes one click through the keyboard shortcut (/) or the N-panel, and the add-on works in both Object and Edit modes. It's compatible with Blender 4.3 through 5.0, marked as a Blender Extension, and distributed under the GPL license. The developer suggests it for architectural modeling, engineering projects, educational demonstrations of 3D coordinate systems, and quality control workflows.

Who is Iruler best for?

Iruler is best for architectural modeling, engineering projects requiring exact dimensions, educational demonstrations of 3D coordinate systems, and quality control and verification workflows.

How much does Iruler cost?

Iruler is completely free to download and use.

Key features

  • Real-time measurements between objects with ruler-style visualization
  • Automatic metric/imperial unit conversion that updates instantly when scene units change
  • Position vectors and displacement tracking for object movement analysis
  • Edit mode support with vertex, edge, and face measurements
  • Overlay system with clean, readable labels and minimal viewport clutter
  • Component analysis showing X, Y, Z distances and vector projections
  • One-click activation via the keyboard shortcut (/) or the N-panel

Tags

#measurement#ruler#distance tracking#unit conversion#blender add-on#architecture#modeling

Frequently asked questions

Does Iruler work with Blender 4.3 and later?

Iruler lists compatibility with Blender versions 4.3 through 5.0 and is marked as Blender Extension compatible. It's provided as an add-on and works in both Object and Edit modes, with measurements updating automatically as you work. The render engines noted for the project are Cycles and Eevee. If you're running a Blender version outside the 4.3 to 5.0 range, check the developer's page to confirm support before installing.

How do I activate Iruler in the viewport?

Iruler can be activated with a single click, either through the keyboard shortcut (/) or from the N-panel. Once active, it works in both Object and Edit modes, and all measurements update automatically as you work for instant feedback. In Object mode you get real-time distances between objects, while Edit mode adds vertex, edge, and face measurements. The overlay uses clean, readable labels designed to keep viewport clutter to a minimum.

Does Iruler handle both metric and imperial units?

Iruler includes automatic unit conversion between metric and imperial that updates instantly when you change your scene units, so measurements always match your current settings. Alongside unit conversion, it offers component analysis showing X, Y, and Z distances plus vector projections, and it tracks position vectors and displacement for object movement analysis. These features suit architectural modeling, engineering projects, and quality control workflows where exact dimensions matter.

Is Iruler free to use?

Iruler is listed as free here, and it's distributed under the GPL license. Licensing and pricing can change over time, so it's worth checking the developer's page for the current terms before you download. The add-on is marked as Blender Extension compatible and supports Blender 4.3 through 5.0, with Cycles and Eevee noted as render engines. It works in both Object and Edit modes.

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