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CSV File Tools
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Free · Browser-local tools

Format a CSV file

Choose CSV delimiters and line endings. Preview normalized quoting and download a formatted copy while preserving cell values.

Format CSV

Start with your CSV

Open your file in the CSV editor with this tool already selected. Preview the result before downloading.

  1. Open or paste your CSV.
  2. Choose delimiter and Windows or Unix/macOS line endings.
  3. Inspect normalized quoting, then copy or download the complete output.

Free · No signup · File contents stay in your browser. Back to page and Resume keep your edits in this tab. Download your edited copy before refreshing; refresh opens the original file. Open files up to 1 GiB with browser storage.

Try a small example

3 records · 3 columns
Illustrative CSV sample data
idnameamount
1Example one12
2Example two24
3Example three18

Semicolon-delimited output

id;name;amount
1;Example one;12
2;Example two;24
3;Example three;18

Illustrative fictional data. Open the sample to try the tool.

How to format csv

  1. 1

    Open or paste your CSV.

  2. 2

    Choose delimiter and Windows or Unix/macOS line endings.

  3. 3

    Inspect normalized quoting, then copy or download the complete output.

What to expect

Changes serialization while preserving cell text and leading zeros. Tab-delimited output downloads as TSV; the preview is bounded while copied/downloaded output is complete.

Local files and clear limits

These tools process file contents on your device. The browser workspace accepts files up to 1 GiB and 5 million records, subject to available browser storage and decoded-record limits. This tool's calculations support up to 100,000 records, 2 million cells and 64 MB of text. Download a new copy to keep your result.

Plain answers

Format CSV questions

What can I do with this format csv tool?+

Changes serialization while preserving cell text and leading zeros. Tab-delimited output downloads as TSV; the preview is bounded while copied/downloaded output is complete.

Does my CSV leave my device?+

File selection, editing and these task operations run in your browser. No account or file upload is required. Download a new copy to keep your result; refreshing restores the original input, not unsaved edits.

Do the editor and task have the same file limits?+

The editor opens files up to 1 GiB and 5 million records, subject to browser storage and decoded-record limits. This task supports up to 100,000 records, 2 million cells and 64 MB of decoded text.