> For the complete documentation index, see [llms.txt](https://docs.adlibertas.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.adlibertas.com/the-platform/business-analytics/creating-a-custom-dimension.md).

# Creating a custom dimension

Custom metrics (expressions) allow you to get more complex view of your data.

When you're analyzing your data in our BI tool, you have the ability to combine or add calculations between columns of your data.

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