YAML to CSV Converter
Convert YAML to CSV free, online, and without installing anything. This YAML to CSV converter parses nested YAML files right in your browser and flattens them into clean, spreadsheet-ready CSV — arrays of objects become rows, nested keys become dot-notation headers, and multi-document files merge automatically. A practical YAML parser to CSV for developers who need a YAML file to CSV export without Python scripts: every YML to CSV conversion runs 100% client-side, so your data never leaves your device.
100% client-sideNested YAML flatteningLive previewFree & unlimitedYAML input
CSV output
Table preview (first 100 rows)
How to convert YAML to CSV
Paste or upload YAML
Drop your YAML text into the input box, upload a .yaml/.yml file, or start from a sample. Conversion to CSV starts live as you type.
Tune the flattening
Pick your delimiter, quote character, and header style. Point the root path at a nested array (e.g. spec.containers) to convert just that section.
Copy or download
Inspect the table preview, then copy the CSV to your clipboard or download it as a .csv file that opens directly in Excel and Google Sheets.
YAML to CSV converter FAQ
What is a YAML to CSV converter?
A YAML to CSV converter is an online tool that parses YAML documents and reshapes them into comma-separated values. Arrays of objects become spreadsheet rows, nested objects are flattened into dot-notation columns (for example server.host), and the result opens directly in Excel or Google Sheets.
How do I convert YAML to CSV online?
Paste your YAML into the input box or upload a .yaml or .yml file, and the conversion runs live in your browser. Adjust options such as the delimiter, quote character, or header naming if needed, then copy the result or download it as a .csv file.
How are nested YAML objects handled?
Nested mappings are flattened with dot-notation headers by default, so user.address.city becomes a single column. You can switch to bracket notation (user[address][city]) or snake_case (user_address_city), and multi-document files gain a _doc column so every row stays traceable.
How are YAML arrays converted to CSV rows?
A top-level YAML array of objects converts naturally: each object becomes one row and each key becomes a column. Nested arrays inside a row are serialized as JSON cells (or joined with a separator you choose), and a bare array of scalars becomes a single value column.
Is this YAML to CSV converter free?
Yes. This is a free YAML to CSV converter with no signup, no usage limits, and no watermarks. Because everything runs locally in your browser, there is no server queue and no waiting time.
Does my YAML data leave my browser?
No. The YAML parser and CSV generator are 100% client-side JavaScript with zero external requests. Your data is never uploaded, stored, or sent anywhere, which makes this tool safe for configuration files and other sensitive documents.
Can I convert a YAML file instead of pasting text?
Yes. Use the upload button or drag and drop a .yaml or .yml file onto the input area. The file is read locally by your browser, so large configuration exports convert exactly like pasted text.
What happens with multi-document YAML files?
Documents separated by --- are all converted and merged into one CSV table, with a _doc column recording which document each row came from. If you only need the first document, switch the multi-document option to "First document only".
Free tool by NRTechStudio