Want to combine multiple CSV files into one CSV file?
Try Withdata Data File Converter, a desktop CSV merger for Windows, MacOS, and Linux, Merge multiple CSV files into one, Easy and Fast.
- Can run in GUI mode, Step by Step, just a few mouse clicks.
- Can run in Command line, for Scheduled Tasks and Streams.
- Convert files locally and privately, avoid uploading large CSV file(s) to online services.
- Support Windows, Linux, and macOS.
Download Withdata DataFileConverter
Combine multiple CSV files into one
Select source CSV files -> Set target CSV file -> Combine CSV files
Click “Start a New Convert” at task dialog.

then show the wizard.
Select source/destination file type.

1. Select source CSV files.

And Config first source CSV file.

2. Config target (output) CSV file.

3. Set rows options.

4. Combine CSV files.

After merging, you can view the output CSV file.

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