CSV
CSV Tools

Convert CSV to YAML

Transform CSV data into clean, readable YAML documents

CSV Input

YAML

YAML output will appear here...

Options

CSV Format

YAML Output

How to Use This Tool

This tool converts CSV data into YAML documents directly in your browser. No data is uploaded or sent to any server.

You can provide CSV input in three ways: paste it directly, upload a file, or fetch it from a URL. The YAML output updates in real time as you make changes.

  1. Provide your CSV — Paste CSV text into the input area, drop a CSV file onto the File tab, or enter a URL on the URL tab to fetch remote data.
  2. Configure options — Open the Options panel to adjust CSV parsing settings (delimiter, quote character, headers) and set the YAML indentation level.
  3. Get your YAML — Copy the YAML output to your clipboard or save it as a .yaml file using the buttons above the output preview.

FAQ

4 questions
Does this CSV to YAML converter upload my data?
No. All conversion happens entirely in your browser using JavaScript. Your CSV data never leaves your device — no server receives, stores, or processes it.
How are values that look like booleans or numbers handled?
Values like 'true', 'false', 'yes', 'no', and numeric strings are automatically wrapped in double quotes to prevent YAML parsers from interpreting them as non-string types.
What happens when there is no header row?
Without headers, the output becomes a list of sequences (arrays) instead of a list of mappings. Each CSV row becomes a YAML sequence item.
How are empty cells represented?
Empty CSV cells are output as YAML null values.

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