CSV ↔ YAML Converter Online
Convert CSV data to YAML and YAML lists back to CSV instantly in your browser.
What Is CSV ↔ YAML Converter?
CSV ↔ YAML Converter transforms tabular CSV data into YAML sequences and converts YAML lists of objects back to CSV — all in your browser with no server upload. When converting CSV to YAML, the first row becomes the mapping keys and each row becomes a YAML sequence entry. Numeric strings are automatically inferred as numbers. When converting YAML to CSV, each mapping in the sequence becomes a CSV row.
How to Use CSV ↔ YAML Converter
- Select the conversion direction: CSV → YAML or YAML → CSV.
- Paste your input or click Load Sample to use an example.
- Click Convert to run the conversion.
- Copy the output with the Copy button.
Features
- Bidirectional — CSV to YAML and YAML to CSV
- Type inference — numeric strings become YAML numbers
- Quoted field support — handles commas and quotes inside CSV fields
- Pretty YAML output — indented, human-readable format
- Browser-only — no data sent to any server
FAQ
How does CSV to YAML conversion work?
The first row of the CSV is treated as column headers. Each subsequent row becomes a YAML mapping object in a sequence. Numeric values are automatically converted to numbers in the YAML output.
What YAML structure does the YAML to CSV converter expect?
The converter expects a YAML sequence (list) of mapping objects, where each mapping has the same keys. The keys become CSV column headers and the values become cell content.
Does the converter handle quoted CSV fields?
Yes. Fields enclosed in double quotes are parsed correctly, including fields that contain commas or escaped double quotes.
Is my data sent to a server?
No. All conversion happens entirely in your browser using js-yaml. No data is sent to any server.