Change CSV Delimiter

What It Does

Convert CSV files from one delimiter to another — switch between commas, semicolons, tabs, pipes, or any custom character. The tool correctly handles quoted fields containing the delimiter so your data stays intact during conversion.

How It Works

Change CSV Delimiter swaps one pattern, character set, or representation for another. The interesting part is not just what appears in the output, but how consistently the replacement is applied across mixed input.

Replacement logic usually follows the exact match rule the tool expects. Small differences in case, punctuation, or surrounding whitespace can explain why one segment changes and another does not.

All processing happens in your browser, so your input stays on your device during the transformation.

Common Use Cases

• Convert semicolon-delimited European CSV exports to comma-delimited format for US tools
• Switch a comma CSV to tab-separated for pasting into spreadsheets
• Convert pipe-delimited mainframe exports to standard CSV
• Prepare data files for tools that require a specific delimiter
• Standardize mixed-delimiter files from different data sources

How to Use

1. Paste your CSV data into the input area.
2. Select or type the current delimiter used in your file.
3. Select or type the new delimiter you want.
4. Click Convert and copy the result.

Features

• Handles quoted fields that contain the original delimiter
• Supports comma, semicolon, tab, pipe, and custom characters
• Preserves multiline fields within quotes
• Automatically adds quoting when the new delimiter appears in field values
• Processes data entirely in-browser

Examples

Below is a representative input and output so you can see the transformation clearly.

name,age,city
Ada,36,London
Lin,29,Berlin

name;age;city
Ada;36;London
Lin;29;Berlin

Edge Cases

• Very large inputs can still stress the browser, especially when the tool is working across many rows and columns. Split huge jobs into smaller batches if the page becomes sluggish.
• Overlapping patterns and global replacements can produce broader changes than expected, so preview a small sample before full input.
• If the output looks wrong, compare the exact input and option values first, because Change CSV Delimiter should be repeatable with the same settings.

Troubleshooting

• Unexpected output often means the input is being split or interpreted at the wrong unit. For Change CSV Delimiter, that unit is usually rows and columns.
• If a previous run looked different, check for hidden whitespace, changed separators, or a setting that was toggled accidentally.
• If nothing changes, confirm that the input actually contains the pattern or structure this tool operates on.
• If the page feels slow, reduce the input size and test a smaller sample first.

Tips

When converting to tab-delimited format for Excel, remember that Excel on Windows may expect a .txt extension for tab-separated files. Rename the output accordingly.