YAML to CSV Converter
Convert YAML into CSV. Paste a YAML list of mappings (or a single mapping) and get a clean, spreadsheet-ready CSV table.
Conversion Options
Recommended Settings
Pro Tips
- •A single YAML mapping is treated as one row; a YAML list of mappings becomes multiple rows
- •If entries have different sets of keys, the CSV includes the union of all columns found
- •Nested objects or arrays inside a value are serialized as JSON text within that cell
- •Choose a semicolon or tab delimiter if your data contains commas that shouldn't be treated as separators
- •The whole document is parsed locally in your browser using js-yaml - nothing is uploaded anywhere
Most Popular
Most users paste a YAML list of records and keep the header row enabled
When to Use This Tool
Convert YAML data files, Ansible inventories, or config lists into CSV for spreadsheets or reporting tools.
Turn a YAML configuration list into a CSV table to review, filter, or sort settings in a spreadsheet.
Bring YAML-based data feeds into Excel or Google Sheets without writing a custom parser.
Convert raw YAML into CSV for teammates who'd rather scan a spreadsheet than read YAML markup.
How It Works
Parse the YAML input using the js-yaml library, which fully supports the YAML spec including anchors and multi-line strings
Normalize the result into an array of records - wrapping a single mapping into a one-item array if needed
Compute the union of all keys found across every record to build the CSV header
Format each record as a CSV row, escaping quotes and special characters, and serializing nested values as JSON text
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by js-yaml for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
What YAML structures does this tool support?
It accepts a single YAML mapping (converted to a one-row CSV) or a YAML list of mappings (converted to a multi-row CSV). Scalars or lists of scalars aren't supported since CSV needs field names.
What happens if records have different fields?
The CSV includes the union of every field name found across all records. Records missing a particular field simply get an empty cell for that column.
How are nested objects and arrays handled?
A nested object or array value is serialized as a compact JSON string within its cell, since CSV cells can only hold flat text.
Is my YAML uploaded to a server?
No. The entire document is parsed locally in your browser using the js-yaml library. Your data never leaves your device.
What happens with invalid YAML?
The tool shows the specific YAML syntax error reported by js-yaml, including the line and column where the problem was found.