All conversion runs in your browser. Nothing is uploaded.
About this converter
Going from a CSV table (a database export, a spreadsheet) into a YAML config or test fixture usually means rewriting it by hand. This converter does it for you: the CSV is parsed per RFC 4180, the first row becomes the keys, and the result is emitted as a clean YAML sequence of mappings.
Features
- RFC 4180-compliant CSV parsing
- First row → YAML mapping keys
- Auto-typed cells: numbers, booleans, `null`, strings
- Idiomatic YAML output with 2-space indent
- Browser-only, no upload
How to use
- Paste your CSV (with a header row) on the left.
- Read the YAML sequence on the right.
- Click Copy or Download to export the result.
Frequently Asked Questions
Are numbers and booleans recognized?
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Yes. Cells matching simple integer or float patterns become YAML numbers; `true`/`false`/`null` become YAML scalars; everything else stays as strings.
Will keys be quoted?
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Only when they need to be (contain special characters or look like reserved words). Plain alphanumeric headers are emitted bare.
Can I round-trip CSV → YAML → CSV losslessly?
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For flat tables of simple values, yes. Cells that contain commas, quotes, newlines or look-like-types are preserved exactly when round-tripped through this tool.
Related tools
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Canonical: https://devformatlab.com/en/convert/csv-to-yaml