Free tool · part of CSV Studio
CSV merger
Combine matching CSV files into one dataset. Works with CSV. Free, no account, and your files never leave your device.
Open the csv mergerHow it works
- Open the first file.
- Choose the other CSV, Excel or JSON files to add.
- Columns are matched by name, in any order; download the result.
Everything happens in your browser: nothing is uploaded. The tool opens inside CSV Studio, where the rest of its tools are one click away.
- Free, with no limits or watermarks
- No sign-up
- Works offline once opened