Merge Multiple Excel Files
Upload multiple Excel files and combine them into a single workbook. Stack all rows into one sheet, or keep each file as a separate sheet. Everything runs in your browser — your files never leave your device.
Drop Excel files here
or click to browse — select multiple files at once
100% private — your files never leave your browser
How to Merge Excel Files
Upload files
Drop multiple .xlsx or .xls files at once, or click to browse and select several files.
Reorder
Use the arrows to set the order of files. The first file sets the column headers in stack mode.
Choose mode
Select "Separate sheets" to keep each file's sheets distinct, or "Stack rows" to combine all data in one sheet.
Download
Click Merge & Download to get your combined Excel workbook instantly.
Common Uses for Merging Excel Files
- Monthly reports: Stack January, February, March exports into one annual dataset for pivot tables and analysis
- Regional data: Combine data from different offices, countries, or teams into a single master file
- Survey results: Merge survey exports from different time periods into one response dataset
- Consolidating workbooks: Take multiple single-sheet workbooks and combine them as separate sheets in one file
- Database exports: Merge multiple table exports into one workbook with one sheet per table
Frequently Asked Questions
How many files can I merge at once?
There is no hard limit — the tool is constrained only by your browser's available memory. Merging 10–20 files of moderate size works well in most browsers.
What is the difference between "Separate sheets" and "Stack rows"?
Separate sheets: each sheet from each file becomes its own sheet in the output workbook — useful for consolidating monthly files where each month should stay separate. Stack rows: all rows from the first sheet of each file are combined into a single sheet — useful for building a master dataset from multiple exports.
Are my files uploaded to a server?
No. All files are processed entirely in your browser using JavaScript. They never leave your device.
What happens to duplicate header rows when stacking?
In stack mode, the tool detects whether subsequent files have the same header row as the first file, and automatically skips it. This means you get a clean dataset without repeated column headers in the middle.
Can I reorder the files before merging?
Yes — use the up and down arrows next to each file in the list to change the order. The files are merged in the order shown.
Will formulas be preserved after merging?
Formulas that reference cells within the same sheet will be preserved. However, formulas that reference other sheets or external files will likely break after merging, since the sheet structure changes. Values are always preserved correctly.