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Convert YAML to CSV / Excel

Convert YAML data to flat CSV or Excel, flattening nested structures into columns.

100% Secure - your files are processed in your browser and never sent to a server.
Drop your file hereor click to browseSupports YAML or TXT files (.yaml, .yml, .txt) (Max 100MB)

YAML (YAML Ain't Markup Language) is a human-readable data serialization format widely used for configuration files, CI/CD pipelines (GitHub Actions, GitLab CI), and infrastructure-as-code (Kubernetes, Docker Compose). Unlike JSON, YAML uses indentation to define structure and supports comments, making it popular for configuration. However, YAML files cannot be directly imported into spreadsheets or databases. This converter parses YAML documents and flattens them into CSV format. It handles both YAML sequences (arrays) and mappings (objects), supports nested structures using dot-notation, and processes multiple YAML documents separated by --- delimiters. You can configure the output delimiter and toggle whether the first row should be treated as a header. The parser runs entirely in your browser, which matters because configuration files often contain API keys, database credentials, or deployment secrets. All YAML parsing happens locally using the js-yaml library, with no data transmitted to external servers.

How to use the Convert YAML to CSV tool

  1. Load your YAML data: Drag and drop your .yaml or .yml file, choose a file from your file explorer, or paste YAML content directly into the paste area.
  2. Configure output settings: Choose a CSV delimiter (comma, semicolon, tab, or pipe) and toggle whether the first row is a header.
  3. Convert to CSV: Click the "Convert Data" button to parse YAML documents and arrays into structured CSV rows.
  4. Export results: Copy the results to your clipboard, download as a local file, or export to Excel format.

Frequently asked questions

Can this tool handle multi-document YAML files?
Yes. The parser handles YAML files with multiple documents separated by --- (document separator). Each document is parsed and its contents are included in the CSV output.
Does it support YAML anchors and aliases?
Yes. The parser resolves YAML anchors (&) and aliases (*) before converting to CSV, so the output contains the actual values rather than references.
How are YAML lists (sequences) converted to CSV?
Simple lists are joined with a configurable separator. Lists of objects are expanded into rows, with each object property becoming a column.
Can I convert Kubernetes or Docker Compose YAML files?
Yes. The tool handles complex nested YAML structures from Kubernetes manifests, Docker Compose files, and Helm charts. Use dot-notation flattening to access nested configuration values.
Is it safe to paste YAML containing secrets?
Yes. All parsing happens in your browser. No data is transmitted to any server. The tool is safe for processing YAML files containing API keys, passwords, or other sensitive configuration.

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