Formulas: Rhino 8 Tool

Formulas tool allows you to create tables, schedules and text that will update from Rhino geometry.

Turn Rhino geometry into live, reusable project data.

This three-script toolkit for Rhino 8 lets you tag objects, build schedules and tables that calculate and update quantities such as areas, lengths, counts and totals directly inside your model. It's like having a spreadsheet within your drawing.

Included scripts:

Label

Assign one or more FTAG values to Rhino objects. Tags can be reused across surfaces, hatches, curves, blocks, text and other model objects.

Formula

Add a FORMULA value to Rhino Text or TextDot objects, creating calculation fields that can be updated at any time.

Format: <type:tag>[prefix,decimals,suffix,units]



Units:

m = metres

mm = millimetres

cm = centimetres

fi = feet and inches

Example: 8'-3.50"

ff = feet and fractional inches

Example: 8'-3 1/2"

fd = decimal feet

Example: 8.25 feet.

i = decimal inches

If units are not specified areas use m².

Calculate

Reads the tagged objects in the model, evaluates the formulas and updates the displayed text.

Supported calculations

• <A:TAG> total area of tagged surfaces, hatches and closed planar curves
• <L:TAG> total length of tagged curves and lines
• <T:TAG> numeric value from tagged text objects
• <C:TAG> count tagged objects
• <CB:BLOCKNAME> count block instances by block name

Formulas can also include standard arithmetic and functions such as:

+ - * / floor ceil round int abs min max

Example formulas

<A:FLOOR>[Floor Area: ,2, m²]

<L:FENCE>[Fence Length: ,1, m]

<C:TREE>[Trees: ,0,]

(<A:HOUSE> + <A:GARAGE>) * 1.10

Typical uses

Ideal for:

• Floor-area schedules
• Site-area calculations
• Fence and wall lengths
• Tree, window and fixture counts
• Planning and building documentation
• Reusable dynamic project schedules

Compatibility

Designed for:

• Rhino 8
• Metric and imperial workflows
• Standard Rhino geometry and annotation objects

The toolkit keeps calculations inside Rhino, reducing repeated manual measurements and making project data faster to update and easier to manage.