Free Online Tool
Excel Merge Tool
Combine multiple XLSX or XLS workbooks into one sheet or preserve every source worksheet in a single Excel file.
Limit: maximum 50 files, each maximum 2 MB
Loading Excel library…
Excel Files Queue
Files and worksheets are processed in this order.
How to Merge Excel Files
Add XLSX or XLS files to the queue.
Combine rows or preserve separate worksheets.
Create and download one XLSX workbook.
One Sheet Merge
One Sheet processes every worksheet in queue order and copies its rows into a worksheet named MergedData. The first non-empty worksheet supplies the header; the first row of later worksheets is skipped.
This mode works best when all source sheets use the same column layout. If columns differ, their cell positions are retained and the combined table may require manual cleanup.
Keep Source Sheets
Keep Sheets copies every worksheet into the output workbook. The source filename is added to each sheet name, and duplicate, long, or invalid names are automatically adjusted to Excel’s 31-character naming rules.
Workbook Compatibility
The output is an XLSX file. Cell values, formulas, number formats, row sizes, column widths, and merged cells are copied where supported. Advanced workbook features such as macros, external connections, charts, pivot tables, conditional formatting, and some complex styles may not be preserved.
Common Errors and Quick Fixes
File rejected: use an XLSX or XLS file no larger than 2 MB.
Unexpected One Sheet columns: make sure source worksheets use matching headers and column positions.
Workbook cannot be read: open and re-save it in Excel or another spreadsheet program.
Formatting differs: use Keep Sheets for the best chance of retaining worksheet structure.
Privacy and File Handling
Your workbooks are processed locally in your browser and are not uploaded to or stored on a server.
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Create reports with Invoice Generator, optimize document scans with PDF Compressor, or combine documents with Merge PDF.
Frequently Asked Questions
Which Excel formats are supported?
XLSX and legacy XLS workbooks are supported. The merged output is XLSX.
How many workbooks can I merge?
You can process up to 50 files, each no larger than 2 MB.
What does One Sheet do with headers?
It keeps the first header row and skips the first row of every later worksheet.
Will every worksheet be preserved?
Choose Keep Sheets to copy each source worksheet separately.
Will macros and charts be preserved?
Not reliably. This browser-based merge focuses on worksheet cells and common sheet structure.
Are my workbooks uploaded?
No. Processing takes place locally in your browser.