About Excel File Merger

What is This Tool?

Excel File Merger is a free, online tool that helps you combine multiple Excel files into one. Whether you need to merge data from different departments, consolidate monthly reports, or aggregate survey results, our tool makes it simple and fast.

Key Features

  • 100% Free: No hidden costs, subscriptions, or file limits
  • Unlimited Files: Merge as many files as you need
  • Privacy First: All processing happens in your browser - files never leave your device
  • Multiple Formats: Support for .xlsx, .xls, .xlsm, .xlsb, .csv, .ods, .tsv
  • Global Encoding: Automatic detection of 150+ character encodings
  • Two Merge Modes: Combine into one sheet or one workbook

How It Works

  1. Upload: Drag and drop your Excel files into the upload area
  2. Configure: Choose your merge mode and output format
  3. Merge: Click the merge button and wait for processing
  4. Download: Your merged file downloads automatically

All processing happens entirely in your web browser using JavaScript. Your files are never uploaded to our servers, ensuring complete privacy and security.

Who We Are

We are an independent team of developers passionate about creating useful tools for Excel users. Our mission is to simplify data management tasks that would otherwise require complex scripts or expensive software.

Technology

This tool is built with modern web technologies:

  • Next.js: React framework for optimal performance
  • SheetJS (xlsx): Excel file processing library
  • Client-side Processing: Everything runs in your browser
  • Multi-language Support: Available in 16 languages

Use Cases

Our tool is perfect for:

  • Finance Teams: Consolidate monthly reports from multiple branches
  • Sales Teams: Merge sales data from different regions
  • HR Departments: Combine employee data from various sources
  • Data Analysts: Aggregate survey results or research data
  • Students: Combine project data or research findings

Support

If you encounter any issues or have suggestions, please contact us at: [email protected]

We typically respond within 24-48 hours.

Important Disclaimer

This is an independent tool and is not affiliated with, endorsed by, or sponsored by Microsoft Corporation.

"Microsoft" and "Excel" are registered trademarks of Microsoft Corporation in the United States and/or other countries.

We provide this tool as a third-party service to help users work with Excel files. We do not claim any association with Microsoft Corporation or its products.

Fair Use Statement

Our use of the term "Excel" is purely descriptive and refers to the file format (.xlsx, .xls) that our tool processes. This constitutes fair use under trademark law as:

  1. Descriptive Use: We use "Excel" to describe the type of files our tool works with
  2. No Confusion: We clearly state we are not affiliated with Microsoft
  3. Legitimate Service: We provide a genuine tool for working with Excel files
  4. No Competition: We do not compete with Microsoft Excel software itself

Your Rights

By using this tool, you retain all rights to your data. We:

  • Do not store your files
  • Do not access your file contents
  • Do not collect personal information beyond basic analytics
  • Do not share your data with third parties

For more details, please read our Privacy Policy and Terms of Service.

Open Source

We believe in transparency. Key components of this tool use open-source libraries:

Future Plans

We're constantly improving this tool. Upcoming features include:

  • Advanced column mapping
  • Data deduplication
  • Conditional merging
  • Scheduled merges
  • API access

Stay tuned for updates!

Last Updated: January 2025

Thank you for using Excel File Merger! 🚀