Excel Data Transformer Merge & Split

Easily merge Excel workbooks/worksheets and split Excel workbook/worksheet 100% offline. Support Windows, Linux, and macOS - no subscriptions, no hidden fees.

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100% Local Processing | Windows / Linux / macOS

Powerful Excel Merge & Split Features

All the tools you need to merge and split Excel files locally - support Windows, Linux, and macOS

Merge Excel Workbooks

Combine multiple Excel workbooks into a single file with just one click

Merge multiple XLS/XLSX files into one
Preserve all formatting and formulas
Customize merge order and structure
Support batch merging of up to 100 files

Merge Excel Worksheets

Combine multiple worksheets from one or more workbooks into a single sheet

Merge sheets within the same workbook
Merge sheets across different workbooks
Keep or remove duplicate rows
Preserve column headers and styles

Split Excel Workbook

Split a single Excel workbook into multiple separate files

Split workbook by worksheets
Custom output file naming rules
Split large files into smaller chunks
Preserve original file formatting

Split Excel Worksheet

Split a single worksheet into multiple sheets or files based on rules

Split by rows, columns, or value
Custom split criteria and rules
Split into multiple sheets or files
Preview split results before export

Blazing Fast Processing

Process large Excel files with millions of rows in minutes

Support files up to 1GB in size
Multi-threaded processing
No data loss or corruption
Fast batch processing

Cross-Platform Support

Works seamlessly on all major operating systems

Full support for Windows (10/11)
Full support for Linux (Ubuntu/Debian)
Full support for macOS (10.15+)
Consistent experience across platforms

How It Works (3 Simple Steps)

Merge or split your Excel files in less than a minute - no internet required

Select Operation

Choose merge (workbook/worksheet) or split (workbook/worksheet) function

Select Files

Choose the Excel files/sheets you want to process and set options

Process & Save

Click process and save the result to your local drive - done in seconds

Frequently Asked Questions

Answers to the most common questions about our Excel merge & split tool

What operating systems are supported? +

Excel Data Transformer supports Windows (10/11 64-bit), Linux (Ubuntu 20.04+, Debian 11+, CentOS 8+), and macOS (10.15 Catalina, Big Sur, Monterey, Ventura, Sonoma). The tool provides a consistent experience across all supported platforms.

Do I need Microsoft Excel installed to use this tool? +

No, you do not need Microsoft Excel or any Office software installed. Our tool has its own built-in Excel file parsing engine that can read and process XLS/XLSX files independently of Microsoft Excel. This makes it perfect for systems without Office installed.

Is the tool really 100% offline? +

Yes! Excel Data Transformer works completely offline. All file processing happens locally on your computer - no data is ever uploaded to our servers or any cloud service. The only time you need internet is when downloading the installer.

What Excel file formats are supported? +

We support all major Excel formats including XLS (Excel 97-2003), XLSX (Excel 2007+), XLSM (macro-enabled), XLSB (binary), and CSV files. The tool can handle both old and new Excel file formats seamlessly.

Can I merge/split large Excel files? +

Yes! Our tool is optimized for large files and can handle Excel files up to 1GB in size with millions of rows, and there's no hard limit on the number of files you can merge or split.