Combine Excel Files and Sheets
Combine multiple XLSX, XLS or CSV files into one workbook. Keep each file as a separate sheet or append rows into a single sheet.
Related guides: How to Merge Cells in Excel
How to Use Free Excel File Merger
Free Excel File Merger is for combining real XLSX, XLS, or CSV files while keeping sheets and row meaning easy to review.
- Choose the actual spreadsheets, including headers and sheet names, so the merged workbook matches your reporting task.
- Decide whether files should become separate sheets or appended rows before you merge them.
- Merge a small set first, then check sheet names and row order before adding the rest of the files.
- Duplicate sheet names, mismatched columns, and hidden rows can make a merged workbook misleading.
- Use a filename that mentions the source folder, date range, or report so the merged workbook is traceable.
Things to Check
- Duplicate sheet names need review after merging.
- Large XLSX workbooks, many sheets, or wide CSV files can use heavy browser memory; merge smaller batches on mobile.
- Open the workbook in Excel, Sheets, or your reporting tool before sharing it.
Helpful FAQ
When is this tool most useful?
Use it when combining monthly reports, exports, survey files, or spreadsheet batches in the browser.
What should I inspect before using the output?
Check sheet names, headers, row counts, formulas, hidden data, and whether appended columns still line up.
Can this password protect Excel files or unlock an Excel sheet?
No. This merger does not password protect Excel workbooks and it cannot unlock Excel sheet protection. If a workbook is protected, the owner should unlock it before merging so the browser can read the sheets correctly.
Does this replace a specialist editor?
For protected workbooks, formulas that must recalculate, or complex macros, use spreadsheet software.
Maintained by Taimour Husnain.
Related tools and guides
- How to merge Excel files safely — Plan headers and worksheets before combining files.