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
What kind of Excel merge does this tool perform?
Separate-sheets mode puts worksheets from selected XLSX, XLS, or CSV files into one workbook. Append-rows mode stacks compatible rows into one worksheet, which is useful when files use the same column layout.
The merger does not merge spreadsheet cells, concatenate two columns, join tables by a common key, calculate formulas, or reconcile conflicting headers. Use spreadsheet formulas, Power Query, or a database join when records must be matched rather than stacked, and keep a copy of every source file.
Merge two Excel sheets as tabs or appended rows
Separate-sheet mode copies worksheets from the selected XLSX, XLS, or CSV files into one workbook and gives duplicate sheet names a unique suffix. Append-rows mode reads the first sheet from each selected file and stacks compatible rows into one sheet. It does not perform a database join, match records by an ID, or reconcile different column meanings.
Use Excel to CSV when one worksheet must become a plain-text table. Read the Excel sheet and workbook merging guide before combining sensitive reports or formula-heavy files.
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.
Combine Excel workbooks into one file
To merge multiple Excel workbooks, open each file using the Excel merger tool, select the sheets to combine, and download the merged output. The tool preserves formulas, formatting, and sheet names when combining workbooks from the same spreadsheet application.
For workbooks with different column structures, align headers before merging. Use the Excel to CSV converter to normalize data first, then merge. The Remove Duplicates tool cleans up duplicate rows after combining. Read the Excel merge guide for step-by-step instructions.