Merge Excel Files — Free, Without Uploading Them

Combine .xlsx and .xls workbooks into one file in seconds. Everything runs on your computer — your spreadsheets never leave it.

Free · No signup · No upload · From the makers of Bulk File Merger, trusted since 2004

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Connected — privacy mode available

You don't need the internet. Disconnect and watch the tool work.

Online

or drop Excel, CSV, or text files here

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0 files loaded into your browser. Nothing has been uploaded.

Output filename Output format Skip header row on files 2+ Remove duplicate rows First sheet only (Excel)

Excel cell values are preserved. Charts, macros, conditional formatting, and merged cells are not.

What you can do

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Merge Excel workbooks

Drop .xlsx or .xls files in any order, drag to reorder, click Merge. Stacks the first sheet of each workbook into a single output.

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Mix CSV and text in too

Excel, CSV and .txt files can go into the same merge. Pick the output format that fits.

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Skip headers & dedupe

Skip the header row on files 2+ so columns line up once, and remove duplicate rows with one checkbox.

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No upload wait

Runs locally on your computer. No queue, no upload bar, no row caps. Often faster than the online tools.

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Private by design

Your files stay on your device from start to finish. Turn off your Wi-Fi and the merge still works.

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Nothing to install

Works in the browser you already have — on desktop, laptop, or phone. No account, no download.

How we compare

	This tool	Online Excel mergers	Excel Power Query	Manual copy-paste
Files stay on your computer	✓ You can verify	Uploads	✓	✓
Handles Excel + CSV + text	✓	Usually one type	✓	✓
Drag to reorder before merge	✓	Rare	No	—
Setup required	None	None	Hours	None, but slow
Works offline	✓	No	✓	✓

Turn off your Wi-Fi. It still works.

That's how you know nothing ever leaves your computer.

Online mergers and "free file combiners" upload your data to a server. We don't. There's no test you can run on us that we'd fail.

Try it yourself ↑

Common questions

Does it keep my formulas and formatting?

Cell values are preserved. Charts, macros, conditional formatting, and merged cells are not carried over — the output is a clean, single-sheet workbook of your data.

How many workbooks can I merge at once?

There is no fixed cap — hundreds of everyday workbooks merge in seconds. Very large batches are limited by your device's memory; if you routinely combine multi-gigabyte batches, the desktop app is built for that.

Do my spreadsheets get uploaded?

No. The merge runs on your own computer. You can verify it: disconnect from the internet and the tool keeps working.

Can I merge Excel and CSV files together?

Yes — drop them into the same list and choose the output format you want. Column layouts are stacked in file order.

Merging thousands of files at a time?

This page is built for everyday merges. For multi-gigabyte batches and folder-scale jobs on a schedule of their own, the Bulk File Merger desktop app for Windows and Mac picks up where the browser leaves off.

See the desktop app →

Also free: Combine CSV files online · Merge text files · How to merge Excel files (guide) · Enjoying it? Leave a tip ☕

Works on every device you use

iOS, Android, macOS, Windows, or any modern browser — same tool, same code, same privacy.

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Android

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Windows

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