Spreadsheet tool · runs in your browser
Merge spreadsheets
Stack many CSV or Excel files into one table (columns are matched by name), or keep each file on its own sheet in one workbook.
- No uploads
- Free
- No sign-up
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Good to know
- Columns with the same header are lined up even if they’re in a different order.
- Add a “Source” column to see which file each row came from.
- Reorder files with the arrows to control the row order.
Questions & answers
What if the files have columns in a different order?
Columns are matched by their header names, so the order doesn’t matter.
Is it really free?
Yes. Every Feemag tool is free, with no sign-up, no watermarks added by us and no daily limits.
Are my files uploaded anywhere?
No. Your files are processed by your own browser on your device and never uploaded to a server. That also makes it fast, even on big files.
Does it work on my phone?
Yes: in any modern browser (Chrome, Safari, Edge or Firefox) on iPhone, Android, Mac, Windows and Linux.
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