Merge Excel Files

Combine Excel and CSV files into one workbook or one sheet.

Runs on your device · no upload

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About Merge Excel Files

Merge Excel combines several spreadsheets into one. Keep each file as its own sheet, or stack all the rows into a single sheet when the columns match. Values are kept and the file stays on your device.

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Save the result. No watermark, no sign-up.

Frequently asked questions

What is the difference between the two ways?

One sheet per file keeps each file separate in one workbook. Stack rows joins the rows of every sheet in every file into one sheet, using the first header row.

Do the columns need to match?

For stacking, yes. The columns should be in the same order in every file.

Are formulas kept?

Values are kept. Formulas and formatting are not.

Can I mix CSV and Excel?

Yes.

Are my files uploaded anywhere?

No. This tool runs in your browser, so your file stays on your device and is never sent to a server.