CSV Column Splitter / Merger – Free Online CSV Tool

CSV Column Splitter tool to split and merge CSV columns online instantly with preview and download. Free, fast, and browser-based.

Split or merge CSV columns instantly. 100% browser-based, fast, and secure.

Upload CSV File

Drag & Drop CSV here

or click to select file

Column Actions

Select Column

Delimiter

---

Merge Columns

Merge Separator

Preview

Frequently Asked Questions

Yes. This CSV Column Splitter and Merger is completely free to use with no limitations. There is no sign-up or subscription required.

No. All CSV processing happens locally in your browser using JavaScript. Your data never leaves your device, ensuring complete privacy.

You select a column and define a delimiter (comma, pipe, semicolon, or custom). The tool splits the selected column into multiple new columns instantly.

Yes. You can select multiple columns and merge them into a single column using a custom separator of your choice.

Yes, modern browsers can handle large CSV files efficiently. Performance depends on your device and browser memory.

CSV Column Splitter / Merger – Free Online Developer Tool

All processing happens locally in your browser.