This tool parses RFC 4180 CSV (with quoted fields support) and converts each row to a YAML mapping. The first row is used as property keys. Ideal for config file generation and data migration. Runs entirely in your browser.
YAML is the preferred format for configuration files, CI/CD pipelines, and Kubernetes manifests — human-readable, comment-supporting, and widely used. Converting CSV data to YAML sequences is common when loading test fixtures, generating seed data, or building configuration from spreadsheet exports. This converter handles the mapping automatically.
A CSV row becomes a YAML mapping node: - id: 1 \n name: Alice \n role: admin. Numeric values are kept as strings by default; enable type inference to have "1" written as 1 (unquoted integer). YAML requires strings that look like reserved keywords (true, false, null, yes, no, on, off) to be quoted — the converter handles this automatically.
YAML treats unquoted true, false, yes, no, null, and ~ as Boolean or null scalar values, not strings. If your CSV field contains the word "true" as text data, the converter wraps it in quotes to preserve string type.
Block style uses newlines and indentation — highly readable for humans. Flow style uses inline {} and [] notation — compact and more JSON-like. Block is preferred for config files; flow is useful for short inline data.
Not automatically — CSV data has no concept of comments. However, after generating the YAML you can manually add comment lines (starting with #) as documentation.
YAML mappings are theoretically unordered (unlike JSON arrays and CSV rows). Most YAML parsers preserve insertion order, but this is not guaranteed by the specification. If column order matters, use the CSV to JSON converter instead.
See also YAML to CSV, CSV to JSON, YAML to JSON, and the full data format toolkit.