Handles 500+ files at once

Merge hundreds of Excel files into one.

Drop all your Excel files together, choose how to merge them, and download one clean combined file. Built to handle 500+ files without crashing your browser.

500+

Files at once

100%

Private & offline

Cost forever

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Add your Excel files

Drop a folder full of Excel files, or click to select multiple files at once.

↑ Drop Excel files here or click to browse - select multiple files with Ctrl/Cmd+Click

0 files loaded

Merge mode

Stack rows (recommended)

All rows combined into one sheet. Best for same-format files.

Keep as separate sheets

Each file becomes its own tab in the output workbook.

Skip headers in files after the first Useful when all files have the same column headers. Only applies to Stack mode.

Add a "Source File" column Adds the original filename next to every row so you can trace where each came from.

Processing files... 0%

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Use Cases

Perfect for these jobs

Monthly Reports

Combine 12 monthly sales sheets into one yearly file - in seconds, not hours.

Branch Data

Multiple branches send Excel files? Stack them all into one master sheet with source tracking.

Survey Responses

Got 100+ Excel exports from different surveys? Merge into a single analyzable file.

Merged 247 branch files in under a minute. What used to take me half a day is now coffee-break work.

- A relieved accounts manager

Guide

How it works

Add Files

Drop or select multiple Excel files. Up to 500+ at once.

Choose Mode

Stack into one sheet, or keep each file as separate tabs.

Merge

Hit the button - watch the live progress bar as each file processes.

Download

One fresh .xlsx file with everything combined. Originals stay untouched.

FAQ

Common questions

The tool is tested with 500+ files. Files are processed one by one (batched) so your browser never runs out of memory. Larger files take longer per file, but the tool wont crash.

No. Everything happens inside your browser. Files never leave your device, making this safe even for confidential business data.

Use "Keep as separate sheets" mode - each file becomes its own tab. For Stack mode, files should have similar columns, otherwise data may misalign.

When checked, the first row of each file (after the first one) is skipped - assumed to be a duplicate header row. Uncheck if your files have no headers.

Yes - check the "Add Source File column" option. A new column gets added with each row's original filename for easy tracking.

It preserves values (the computed result of formulas). Heavy formatting like colors and merged cells may be simplified to keep the merge fast and reliable.

Get in touch

Questions or feedback?

Found a bug? Got a feature idea? Drop a message - I reply within 24-48 hours.

Emailyouremail@gmail.com

Blogclipkarosite.blogspot.com

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Excel Merger - Combine Multiple Files