Spreadsheets

Merge Excel Files

Merge multiple Excel or CSV files — stack rows on top of each other, or join by a shared key column.

When to merge Excel files

Consolidating monthly reports from multiple regional teams into one master sheet
Merging customer lists from different sources before importing to a CRM
Combining quarterly sales data from different reps before a presentation
Joining database exports that share a common ID or key column

How to merge Excel files online

01

Drop your files

Select 2 or more .xlsx or .csv files

02

Choose join type

Stack rows on top of each other or join by a shared key column

03

Download result

Your merged file is ready instantly

Your files never leave your browser

Your files never touch our servers

Excel Merger runs entirely in your browser. There are no servers receiving your files — we literally cannot see what you merge. Close the tab and everything is gone.

Frequently asked questions

Are my Excel files uploaded to a server?+

No. Everything runs in your browser. Your files never leave your device and are never sent to any server.

Can I merge more than 2 Excel files at once?+

Yes, you can drop as many .xlsx or .csv files as you need.

Does Excel Merger work with CSV files?+

Yes, it supports both .xlsx and .csv files.

How do I merge Excel files by a matching column?+

Select the join option and choose the shared key column — rows will be matched and merged automatically.

Is there a file size limit for merging Excel files?+

No strict limit — processing happens in your browser so performance depends on your device memory.

Is Excel Merger free?+

Yes, free for 5 uses per month with no signup. Upgrade to Pro for unlimited uses at €10/month.

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