Grasshopper
The CalcTree add-on for Grasshopper lets you run engineering calculations directly in your parametric design workflows. Connect to your workspace, select a calculation, and run it using single values.
Last updated
The CalcTree add-on for Grasshopper lets you run engineering calculations directly in your parametric design workflows. Connect to your workspace, select a calculation, and run it using single values.
Last updated
Automatically run design checks on parametrically produced designs in Revit
Improve your optioneering process by filtering options through calculations before generating designs
Automatically run additional checks on preferred parametric option to ensure design compliance
To install the CalcTree Grasshopper add-on:
Download the .gh file provided by the CalcTree team. You can download it .
Open it in Grasshopper
Copy the available API call node into the file you need.
If you need help with installation, contact us at contact@calctree.com.
Drag the CalcTree Node onto your canvas. Right-click the node to:
Enter your API key
Set your Workspace URL
These can also be fed into the node from the panels.
The API key and Workspace URL are required to access your workspace calculations and can be updated any time via the node’s context menu.
Enter parameter names as a comma-separated list into the INPUT_PARAM_NAMES input.
Example: d,v
Enter a single comma-separated list of values into INPUT_PARAM_VALUES.
Example: 200,20
The component will return the result values and the corresponding parameter names (both inputs and outputs).
Use the same format for INPUT_PARAM_NAMES.
Provide multiple lines of comma-separated values in INPUT_PARAM_VALUES, with each line representing a unique input set.
The component will run the calculation for each input row and return the results as a list (or data tree) of outputs.
Input units are not currently supported — all inputs are interpreted as raw numbers.
However, if a parameter in the CalcTree page has units defined, output values will include the corresponding units when returned.
The CalcTree Grasshopper add-on connects your design workflows to structured, verifiable engineering logic. It supports both single-value and bulk calculations, making it ideal for real-time feedback and parametric studies within Rhino.
If you need support, reach out at contact@calctree.com.
