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⚠️ Important Note: All CSV files to be merged must have the exact same header (column) rows.
Tools/Data & Tables/CSV Merger

CSV Merger

Merge multiple CSV files.

100% on device · 0 uploads
Drop files here
or click to select · .csv (En az 2 dosya seçin / Select at least 2)
300x250
01 · Unlimited
Use it as many times as you want — completely free.
02 · Private
Your files never leave your device; everything runs in your browser.
03 · Fast
Processing happens locally and finishes in seconds.

How to Merge CSV Files

1

Select multiple CSV files

Click the upload area or drop all the .csv files you want to combine.

2

Merging runs locally

Rows from every file are combined under one header row in your browser.

3

Download the merged CSV

Get a single file ready for Excel, databases or reporting tools.

Why Use This CSV Merger?

✓Combine unlimited exports into one dataset
✓Duplicate headers removed automatically
✓Perfect for monthly report consolidation
✓100% local — business data stays private

Frequently Asked Questions

How are the headers handled?+
The header row of the first file is used; duplicate header rows from subsequent files are skipped so they don't appear as data rows.
Do all files need identical columns?+
For a clean merge, yes — the tool assumes a shared structure, the normal case for exports from the same system across periods.
What's the typical use case?+
Monthly exports — sales, logs, form results — that arrive as separate files and need to be analyzed as one dataset in Excel or a pivot table.
Is there a limit on file count?+
No fixed limit. Merging is a light operation, so even dozens of files combine in moments.