Auto Dimensions
PremiumAuto-place 3-tier height dimensions on exterior wall facades. · Explore the live interface below - every control works exactly as it does inside Revit®.
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Test it Live - exactly as if you are in Revit
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Get Started in Minutes
Four simple steps to bring Auto Dimensions directly into your Revit® environment.
1
Create Account
Sign up for a free NexionTools account - no credit card required.
2
Download Installer
One installer, 52 professional Revit® tools. Under 15 MB.
3
Open Revit
Auto Dimensions appears in your ribbon automatically - ready to use.
4
Activate License
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Why Auto Dimensions exists
Dimensioning a facade is the part of a set nobody volunteers for. You pick a level, drag a string across the elevation, snap to the top of parapet, snap to each floor line, then start again one tier down. Then someone moves a slab by 150 mm and every string you placed needs checking. On a tower with repeating floors you are doing the same rows of dimensions on every elevation in the set, and the only thing that changes is the numbers.
How Auto Dimensions works
Open a plan, elevation, section, ceiling plan or engineering plan - the tool refuses to run on a sheet or a 3D view - and click Auto Dimensions.
The dialog lists the wall types actually present in that view, with instance counts and heights, so you tick the ones you want rather than dimensioning everything. Scope switches between Exterior, Interior and All.
Choose which of the three tiers to place - Overall, Openings and Segments, Floor-to-Floor - and whether doors, windows and structural grids are included as references.
Set the details your standard cares about: dimension to the finish face or the core face, placement on the left, right or both sides, the offset from the wall in millimetres, and chained or separate strings. A fixed threshold skips openings under 300 mm, so a narrow slot does not get a dimension of its own.
The tool groups coplanar walls into facade groups and places native Revit dimensions in one transaction, then reports how many landed across how many groups.
Before
Every elevation gets dimensioned by hand, and every design change means re-reading the whole facade to find what moved.
After
You configure once per view and spend your time checking the result instead of building it. The dimensions are native, so a model change updates them exactly as it always would.
When to reach for it
- Residential and commercial towers where the same facade logic repeats across many elevations.
- Getting a set of untouched elevations to a reviewable state before the detailed annotation pass.
- Re-dimensioning after a floor-to-floor height change, where redoing it by hand is slower than reconfiguring and rerunning.
What it does not do
- Output needs review. The tool says so itself with a disclaimer on first run - it places what the geometry supports, not what your office standard wants on a sheet. Expect to delete some.
- It will not run on a sheet, a 3D view, a schedule or a drafting view. Plan, elevation, section, ceiling plan and engineering plan are the supported view types.
- Warnings raised by Revit while the dimensions are created are suppressed deliberately, so a dimension that Revit considers marginal is placed rather than blocking the run behind a dialog.
- Chained mode is not a styling choice layered over the tiers. Where a facade produces more than two dimension positions the chain replaces the tier placement entirely, and above fifty segments it falls back to tiers without saying so.
- On a workshared model, walls checked out by someone else are skipped and logged rather than waited for. If every wall you selected is owned by someone else, the run stops and asks you to sync rather than reporting a silent zero.
Questions
- Can Revit dimension a facade automatically on its own?
- Only partly. Revit will dimension along a wall when you pick it and use the automatic options in the Dimension tool, but there is no built-in command that reads a view, groups the coplanar facades, and places tiered strings referencing openings and grids. That gap is what this fills.
- Are the dimensions real Revit dimensions or just lines?
- Real dimensions. They are native Revit dimension elements referencing model geometry, so they update when the model changes, follow your dimension styles, and can be edited or deleted individually.
- Can I dimension to the core face instead of the finish face?
- Yes. Face target is one of the options in the dialog, alongside placement side and offset, so the output matches how your office dimensions rather than a fixed assumption.
- What happens if I run it twice on the same view?
- You get a second set on top of the first. Delete the previous run before re-running - it does not detect and replace what it placed earlier.