Merge Excel Files
Combine two or more Excel files into a single workbook — either as separate sheets or merged into one table. Runs entirely in your browser.
Privacy & processing: Runs entirely in your browser — your file is never uploaded to a server.
How to use this tool
- Upload two or more .xlsx or .csv files
- Choose whether to keep separate sheets or combine rows
- Preview the result
- Download the merged .xlsx file
Common use cases
- Combining monthly reports into one workbook
- Merging exports from different tools before analysis
- Consolidating branch or team spreadsheets
Limitations
Only combines file structure and data — it doesn't reconcile conflicting values between files or remove duplicate rows across them (run Remove Duplicates afterward for that).
FAQ
Does merging preserve my original formatting?
Only in "keep separate sheets" mode — each file becomes its own sheet with structure intact. Combining rows into one table flattens everything to raw values, since a single table can't hold multiple files' distinct formatting.
Is there a limit to how many files I can merge?
The tool accepts as many .xlsx, .xls, or .csv files as you select in one batch; very large combined row counts are limited by your browser's available memory, not by RowMint.
Does this tool upload my files anywhere?
No — merging runs entirely in your browser. Your files are never sent to a server.