MS Excel’s XLSX files let you keep the tabular data in the form of rows and columns. You can store small, medium, or large-sized data within XLSX worksheets quite easily. However, there could be a case when you need to convert the spreadsheet data to a word processing format. For such cases, in this article, you will learn how to convert Excel XLSX to DOCX using C#. In addition, you will see how to customize the XLSX to DOCX conversion. So let’s begin.