XLS to DOTX Converter

Transform XLS data into DOTX Word templates online

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Modern Template Format

Move your XLS spreadsheet data into a DOTX template — the Open XML standard recognized by all current Word-compatible applications.

Fully Online

No software needed. Open convertio.tools in your browser, upload XLS, choose DOTX, and download the result within seconds.

Safe and Secure

All uploaded XLS files are automatically deleted after conversion. DOTX results are cleaned from our servers within 24 hours.

How to convert XLS to DOTX

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose dotx or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your dotx file right afterwards

About formats

XLS is the binary spreadsheet format of Microsoft Excel, first introduced with Excel 1.0 for Macintosh in September 1985 and becoming the dominant spreadsheet format worldwide. The format stores workbooks as OLE2 compound document files using the Binary Interchange File Format (BIFF), organizing sheets, cells, formulas, formatting, charts, pivot tables, macros, and metadata across multiple internal streams. Each cell record encodes the cell's value (number, string, boolean, error, or formula), position, and formatting index, while shared string tables and style records reduce redundancy. The format evolved through BIFF versions (BIFF2 through BIFF8), with BIFF8 (Excel 97) establishing the structure used through Excel 2003. XLS supports up to 65,536 rows and 256 columns per sheet, a limit that drove the creation of XLSX. One advantage is universal spreadsheet compatibility — XLS files are recognized by every major spreadsheet application including LibreOffice Calc, Google Sheets, Apple Numbers, and dozens of programming libraries across all platforms. The format's mature feature set is another strength: XLS handles complex formulas, conditional formatting, data validation, named ranges, array formulas, external references, and VBA macros. Although XLSX replaced XLS as the default in Office 2007, the binary format persists in financial institutions, legacy reporting systems, and any environment where Excel 97-2003 compatibility is required.
Developer: Microsoft
Initial release: September 1985
DOTX is the Open XML template format for Microsoft Word, introduced with Office 2007. A DOTX file is a ZIP archive containing XML parts that define document styles, page layout defaults, theme colors, theme fonts, numbering formats, boilerplate content, headers, footers, and other elements that establish a reusable document foundation. When applied, a DOTX template creates a new DOCX document inheriting the template's complete formatting system. The XML-based structure provides advantages over the legacy DOT format: templates can be inspected and modified using standard XML tools, individual components (styles, themes) are cleanly separated into dedicated files, and ZIP compression yields smaller file sizes. One advantage is modular design management — DOTX templates encapsulate a complete formatting identity as a distributable package, and the XML architecture makes it straightforward to update specific elements like color schemes or font definitions without rebuilding the entire template. Broad compatibility is another strength: DOTX templates work in Word on Windows and macOS, LibreOffice Writer, and online platforms including Google Docs (with conversion). The format integrates with Word's template management system and organizational template libraries via SharePoint, enabling centralized document governance across large teams. DOTX has become the standard for distributing document formatting frameworks in corporate, academic, and publishing environments.
Developer: Microsoft
Initial release: January 30, 2007

Frequently Asked Questions

Why convert XLS to DOTX?

DOTX is the modern Word template format — converting XLS creates a reusable Open XML template with embedded tables for recurring documents.

What software opens DOTX files?

Microsoft Word 2007 and newer, LibreOffice Writer, Google Docs, and WPS Office all support DOTX templates for document creation.

Is DOTX better than DOT?

DOTX uses Open XML compression — files are smaller, more secure (no macros by default), and compatible with all modern Office versions.

Is the conversion free?

Yes — convertio.tools offers XLS to DOTX conversion at no charge. Premium plans provide extended features for heavy usage.

Are my files secure?

Absolutely. Uploaded XLS files are deleted right after processing, and DOTX outputs are purged from servers within 24 hours.

XLS to DOTX Quality Rating

4.6 (26 votes)
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