> For the complete documentation index, see [llms.txt](https://docs.enercalc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.enercalc.com/e3d-user-manual/interface/toc175916526/toc161393755/toc161393762.md).

# Scale

How to scale selected parts of a model in the X, Y, and Z directions in ENERCALC 3D.

Modify > Scale prompts you with the following dialog.

![](https://560001759-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWNe8U6EBBBdUJHdb2X9G%2Fuploads%2Fgit-blob-b917c4e7025181ebf608c0fb0b7b3bb6123164c3%2FFASTFR~1_img16.png?alt=media)

It lets you scale selected parts of a model in the X, Y or Z directions. You may specify the coordinates of a base point and scales for the three global directions.

The following formula is used to perform the scaling in the program.

*X\*\*new* *= X\*\*base* *+ (X\*\*old* *- X**base**) \* scale*

Where *X\*\*new* represents the nodal coordinates after scaling, *X\*\*old* represents the nodal coordinates before scaling and *X\*\*base* represents coordinates of the base point.

{% hint style="info" %}
Note: When using this command, be sure to select the intended entities AND THEIR NODES, before executing the command. If the entities are selected without their nodes, the command will not work.
{% endhint %}


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