> For the complete documentation index, see [llms.txt](https://docs.acho.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.acho.io/acho-studio/data-prep-projects/applying-actions/tools/formula.md).

# Formula

**`Formula`** allows users to perform custom calculations or transformations that do not exist in the original data. You can use mathematical operators or apply SQL functions on columns. The result will be a new column at the very right side of the table as the last column. All calculations are done at the row level. That is, it will not change the number of rows in a table. Thus, **`Formula`** does not support aggregation functions, such as `SUM()` or `COUNT()`. 

![](/files/-McBfujySE8xQFKJND5k)

Please visit [Supported functions ](/acho-studio/data-prep-projects/applying-actions/tools/sql-editor/supported-math-functions-in-formula.md)page for all the operators that Acho Formula supports.


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