> For the complete documentation index, see [llms.txt](https://support.docstudio.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.docstudio.com/admin-panel/conversion-rules/how-to-convert-xls-and-x12-to-xml.md).

# How to Convert XLS and X12 to XML

Convert `.xls`, `.xlsx`, and X12 files (`.xml` or `.txt`) to envelopes.

This uses the built-in converter.

### Create a conversion rule

1. Create a new conversion rule.
2. In the first window, upload a sample file in the required format.
3. In the second window, write the conversion rule.
   * Use XPath to map values into the target fields.
4. Run the rule.
5. Check the output in the third window.
6. In the **Name** field, add a regexp for matching input files.
7. Save the conversion rule.

### Convert files automatically

Put files with matching names into the `inbox` or `outbox` folder.

They will be converted to envelopes automatically.