Convert XLSX to XML Online Free

Convert Excel XLSX spreadsheets to structured XML data format. Server-side processing with LibreOffice ensures accurate data extraction and XML formatting for system integration.

By ChangeThisFile Team · Last updated: March 2026

Quick Answer

ChangeThisFile converts your XLSX spreadsheet to structured XML format using LibreOffice on our secure servers. Excel XLSX files contain tabular data, and converting to XML creates structured markup ideal for data integration and API consumption. Auto-deleted after conversion, free with no signup.

Free No signup required Encrypted transfer · Auto-deleted Under 2 minutes Updated March 2026

Convert XLSX to XML

Drop your XLSX file here to convert it instantly

Drag & drop your .xlsx file here, or click to browse

Convert to XML instantly

XLSX vs XML: Format Comparison

Key differences between the two formats

Feature	XLSX	XML
Format type	Binary spreadsheet	Markup/structured data
Data structure	Rows and columns	Hierarchical elements
Human readable	Requires Excel/LibreOffice	Text-based, readable
File size	Compact binary	Larger due to markup
Compatibility	Excel, LibreOffice, Google Sheets	Universal text editors, APIs
Data validation	Built-in cell validation	XSD schema validation
Formatting	Rich cell formatting	Data-focused, minimal styling
Use case	Spreadsheet calculations	Data exchange, APIs

When to Convert

Common scenarios where this conversion is useful

System integration

Convert Excel reports to XML for importing into databases, CRM systems, or other business applications.

API data preparation

Transform spreadsheet data to XML format for consumption by REST APIs or web services.

Legacy system migration

Convert Excel data to XML for migrating to newer systems that require structured data input.

Data validation workflows

Generate XML from spreadsheets to validate data structure against XSD schemas before processing.

Cross-platform data sharing

Convert Excel files to XML for sharing data with systems that don't support spreadsheet formats.

Who Uses This Conversion

Tailored guidance for different workflows

Data Analysts

Convert Excel reports to XML for importing into business intelligence tools or databases
Transform spreadsheet data to XML for automated data processing workflows

Ensure your Excel headers are clean and consistent before converting to XML

Validate the XML output structure matches your target system's requirements

Software Developers

Convert XLSX data exports to XML for API consumption or system integration
Transform spreadsheet configurations to XML for application settings or data migration

Check that the XML schema matches your application's expected data structure

Test the XML output with your parsing code before processing large datasets

System Administrators

Convert Excel inventory or configuration files to XML for system imports
Transform spreadsheet reports to XML for automated processing by enterprise systems

Backup original Excel files before conversion in case data structure adjustments are needed

Verify XML encoding and character handling for international or special characters

How to Convert XLSX to XML

1

Upload your XLSX file

Drag and drop your .xlsx file onto the converter, or click to browse. Excel spreadsheets up to 50 MB are supported for free.
2

Server-side conversion

Your file is securely uploaded and converted on our servers using LibreOffice, which extracts the spreadsheet data and structures it as XML. This typically takes a few seconds.
3

Download the result

Once conversion is complete, click Download to save your .xml file. The uploaded file is automatically deleted from our servers.

Frequently Asked Questions

Is the XLSX to XML conversion free?

Yes, completely free. Convert XLSX to XML with no cost, no signup, and no watermarks.

Is my spreadsheet kept on your servers?

No. Files are automatically deleted immediately after conversion. Nothing is stored or retained.

Is the transfer secure?

Yes. Files are transferred over encrypted HTTPS connections. Your data is protected in transit.

What technology powers this conversion?

The conversion uses LibreOffice headless mode on our servers, ensuring reliable and accurate data extraction from Excel spreadsheets to XML format.

How is the XML structured?

The XML output preserves the row and column structure from your Excel spreadsheet, with elements representing cells and their data values.

Are formulas converted to XML?

Formula results are included in the XML output. The calculated values are preserved, but the formulas themselves are not transferred.

Can I convert multi-sheet XLSX files?

Yes, multi-sheet Excel files are supported. Each worksheet is converted and included in the XML structure.

What happens to formatting and styles?

XML focuses on data content rather than visual formatting. Cell values are preserved, but colors, fonts, and styling are not included in the output.

Are headers and column names preserved?

Yes, the first row of your spreadsheet is typically treated as headers and preserved in the XML structure to maintain data organization.

How large will the XML file be?

XML files are typically larger than the source XLSX due to markup overhead. The exact size depends on your data structure and content volume.

Can I convert password-protected Excel files?

Password-protected XLSX files require the password to be removed before conversion. Upload an unprotected version of your spreadsheet.

What is the maximum file size?

Excel spreadsheets up to 50 MB are supported for free conversion.

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Need to convert programmatically?

Use the ChangeThisFile API to convert XLSX to XML in your app. No rate limits, up to 500MB files, simple REST endpoint.

View API Docs

Read our guides on file formats and conversion

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