CSV Column Splitter

Split a CSV column into two or more separate columns by delimiter, character, or regex.

How It Works & Processing Standards

Split a CSV column into two or more separate columns by delimiter, character, or regex.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Desktop max file size: 50MB
  • Mobile max file size: 20MB

CSV Column Splitter is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use CSV Column Splitter

  1. 1
    Paste CSVInput your CSV table.
  2. 2
    Configure SplitSelect the column, delimiter (e.g. comma, space, hyphen), and new header names.
  3. 3
    Download ResultExport the expanded table with split columns.

Examples

Split Name into First/Last
Input: full_name John Smith Alice Walker
Result: Split by space: first_name,last_name John,Smith Alice,Walker

Common Use Cases

  • Splitting full name entries into separate first and last name fields
  • Separating combined city, state, and zip code strings into normalized address columns
  • Splitting timestamps into separate date and time columns

Frequently Asked Questions (FAQ)

What happens if some rows have more separators than expected?

You can choose to split only on the first N occurrences or expand into additional overflow columns.

Have feedback or ideas for this tool? Suggest & Inquire →