SketchUp Extension
ZB Smart Dimensions helps you create native SketchUp dimensions faster for groups and components. Add width, depth, and height dimensions with live preview, a visual placement picker, offset control, editable placement, and tag management.
Choose any direction — +X, −X, +Y, −Y, +Z, or −Z — to place your dimension exactly where you want it.
See the dimension placement directly in your SketchUp model before committing. Non-destructive — nothing is created until you click Generate.
Create individual dimensions for each selected object, or a single dimension spanning the entire selection — your choice.
Select existing linear dimensions and the dialog switches to edit mode automatically. Update the offset visually or by typing a new value.
Assign dimensions to Active Tag, a dedicated “Dimensions” tag, or any custom tag — keeping your model organised from the start.
Your preferred dimension type, placement, unit, and tag settings are remembered between sessions so you can jump straight in.
Click a side of the object directly in the model, drag to set the offset visually, and release to apply — or drag the live preview itself while the dialog is open. Snap to 5 mm or 10 mm increments while dragging.
For width and depth dimensions, choose exactly where the dimension line sits across the vertical bounds of the selection.
Requires SketchUp 2026 or later.
Install from Extension Warehouse.
All dimensions created in one operation can be undone with a single Ctrl+Z.
Select one or more existing linear dimensions in your model. The dialog detects them and switches into edit mode automatically.
Type a new offset distance, or drag the placement picker in the viewport to set it visually. Click Generate to apply.
Click Pick dimension placement to place a dimension directly in the model: hover to preview, click a side of the object to begin, drag to set the offset, and release to apply. Generation can trigger straight from the picked result.
Outside the picker, you can also drag the live preview itself in create mode to set the offset visually — the offset field updates live as you drag.
Both dragging methods support snap increments of 5 mm or 10 mm, configurable in the Settings tab, or you can turn snapping off.
The extension supports both millimetres and inches. Set your preferred unit in the dialog, then type plain numbers (interpreted in that unit) or use explicit units:
300 — 300 in your current unit300mm — always 300 millimetres12in — always 12 inchesObject reference follows the object’s own transformed local axes. Model reference follows SketchUp world axes.
The offset direction must be perpendicular to the measure direction:
Only Groups and Component Instances are supported. Raw geometry, text, and guides are ignored.
Yes. It creates native SketchUp dimension entities rather than separate graphic labels.
Yes. It is built for faster dimension workflows on selected groups and components.
Yes. Live preview helps you see placement before committing.
Yes. Existing dimensions can be adjusted through the extension workflow.
Yes. The visual placement picker lets you click a side of the object and drag to set the offset directly in the viewport, with optional 5 mm or 10 mm snapping.
Yes. Groups and components are core use cases for the extension.