CSV to YAML
Convert CSV data to YAML format. Parses CSV with a header row and emits a YAML object for each data row — all in your browser, no upload, instant results.
About the CSV to YAML Converter
This CSV to YAML converter runs entirely in your browser. Paste CSV data into the box above, pick a delimiter, choose whether the first row is a header, and click Convert. Each data row becomes a YAML object keyed by the header. Nothing is uploaded to a server — the conversion happens instantly with JavaScript on your device.
About the CSV format
CSV (Comma-Separated Values) is a plain-text format for storing tabular data. Each line is a row, and each field is separated by a delimiter (usually a comma). Fields that contain the delimiter, a quote, or a newline must be wrapped in double quotes, and any internal double quotes are escaped by doubling them ("").
Conversion rules
- Header row — When enabled, the first row defines the keys for each YAML object in the output sequence.
- No header — When disabled, the output is a YAML sequence of sequences.
- Delimiters — Choose comma, semicolon, tab, or pipe to match your input.
- Quoted fields — Fields wrapped in double quotes may contain the delimiter and newlines.
- Escaped quotes — A doubled double-quote inside a quoted field (
"") is treated as a literal quote character. - Scalars — Strings that look like numbers, booleans, or null are quoted to preserve them as strings.
Common use cases
- Generating YAML configuration from spreadsheet exports.
- Converting tabular data for YAML-based tools and pipelines.
- Preparing sample datasets for documentation.
- Quick inspection of CSV files in YAML form.
Frequently asked questions
Does this tool upload my CSV? No. All conversion happens locally in your browser. Your data never leaves your device.
What happens to empty lines? Completely empty lines are skipped, so trailing newlines do not produce empty rows.
Are numbers converted to numeric types? No. To preserve all data faithfully, every value is kept as a string and quoted when needed so YAML parsers will not reinterpret it.
Is there a size limit? The only limit is your browser's available memory. Even large CSV files convert quickly.