Free CSV to YAML Converter Online
Convert CSV to YAML in your browser — free, instant, no data sent to servers.
CSV Input
YAML Output
What Is CSV to YAML?
You have a spreadsheet and a tool that expects YAML. This converter bridges that gap. CSV (RFC 4180) is a flat row-and-column format. YAML uses indented lists and mappings for hierarchical data — perfect for config files, Kubernetes manifests, and GitHub Actions workflows. Each CSV row becomes a YAML mapping; the header row provides the keys.
Your CSV is parsed and converted inside the page, with no server round trip. Paste rows or open a file and the YAML comes out on the right. If you want JSON instead, use CSV to JSON. For CSV to XML, use CSV to XML. For formatting CSV first, use CSV Formatter.
CSV to YAML Examples
Convert CSV rows to YAML list. Telecom-themed example:
Example: Subscriber records
YAML Output:
Click the Sample button above to load more examples into the editor.
How to Use This Tool
Paste or Upload
Paste CSV into the left panel or upload a .csv or .txt file. Use Sample to load example data. Use Clear to reset.
View YAML Output
Converted YAML fills the right-hand pane. Rows turn into list items or mappings, and malformed CSV produces an error message instead.
Copy or Download
Use Copy or Download to get the YAML. For formatting YAML, use YAML Formatter. For validation, use YAML Validator.
The tool parses your CSV per RFC 4180 and builds a YAML structure. Each row typically becomes a list item or mapping; the first row defines keys. The output is human-readable YAML with proper indentation. Special characters are escaped. None of this leaves your machine, because the parsing happens in the page itself.
The tool parses your CSV per RFC 4180 and builds a YAML structure. Each row typically becomes a list item or mapping; the first row defines keys. The output is human-readable YAML with proper indentation. Special characters are escaped. None of this leaves your machine, because the parsing happens in the page itself.
When CSV to YAML Helps
When migrating spreadsheet data to YAML config, CI/CD pipelines, or Kubernetes manifests, convert here. YAML is common in DevOps tools like Ansible, Docker Compose, and Helm. Great for exports from Excel or databases. For JSON output, use CSV to JSON. For XML, use CSV to XML.
Config files and environment-specific data often start as spreadsheets. Converting to YAML here produces ready-to-use config for deployment. For formatting the output, use YAML Formatter. For validation, use YAML Validator. For conversion from YAML to JSON, use YAML to JSON.
Frequently Asked Questions
Is my data private?
Yes. The rows are converted by code running in your tab and are never uploaded.
How are rows converted?
Each CSV row typically becomes a YAML list item or mapping. The first row may be used as keys. Check the output for your structure.
CSV to YAML vs CSV to JSON?
Both convert CSV to structured data. YAML is more human-readable; JSON is common for APIs. Use the format your target expects.
Does it support headers?
Yes. The first row is typically used as keys for subsequent rows. The structure depends on the implementation.
Can I convert YAML to CSV?
This tool converts CSV to YAML. For YAML to JSON, use YAML to JSON. A full YAML to CSV would need a different tool.
Related Tools
For CSV format, see RFC 4180. For YAML, see YAML 1.2 spec and yaml.org. JSON is an alternative for API responses.