Drag and drop your files here
or
Your file is processed in your browser and is never sent to our servers.
About CSV Merger
CSV Merger joins several CSV files into one. It can match columns by their header names, so files with a different column order still line up.
Tips for best results
- Files with the same headers merge best.
- Columns that only some files have are added with empty cells.
- Remove a file with the Remove button if you added it by mistake.
How to use CSV Merger
- 1
Add your CSV files
Choose two or more files.
- 2
Order and options
Move files up or down and choose to match by header.
- 3
Download
Save merged.csv.
Frequently asked questions
Are headers repeated?
No, the header appears once at the top.
Is my data uploaded?
No. Your file is opened inside your browser, so it stays on your own phone or computer and is not sent to our servers.