Free CSV to YAML Converter
Convert CSV records to YAML lists for config files, Kubernetes, and CI/CD pipelines.
Drop your CSV file here
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How to convert
- 1
Upload your CSV file by dragging it onto the drop zone, or paste your CSV data into the text area.
- 2
Click the Convert button to generate YAML output.
- 3
Each CSV row becomes a YAML list item with column headers as keys.
- 4
Copy the result to your clipboard or click Download to save the .yaml file.
Features
- 100% private — data never leaves your browser
- No file uploads to any server
- No signup or account required
- Free with no usage limits
- Valid YAML 1.2 output
- Proper type and special character handling
- Full UTF-8 and special character support
- Works on any device with a modern browser
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format used extensively for configuration files, Kubernetes manifests, CI/CD pipelines (GitHub Actions, GitLab CI), Ansible playbooks, Helm chart values files, and Docker Compose files. Converting CSV to YAML turns each row into a YAML list item keyed by your column headers — a CSV row like "name,age,active / Alice,30,true" becomes a mapping with name: Alice, age: '30', active: 'true' underneath a list dash. Every value is preserved as a quoted string, exactly as it appeared in the CSV cell, rather than converted into a native YAML number or boolean.
When to convert?
Convert CSV to YAML when you need to generate configuration data, create Kubernetes resource definitions or Helm values.yaml files from spreadsheet data, seed test fixtures for CI pipelines, build a GitHub Actions build matrix from a list maintained in a spreadsheet, prepare data for Ansible playbooks, or produce human-readable structured output from tabular data.
Frequently asked questions
Is my data safe when converting CSV to YAML?
Yes. The conversion runs entirely in your browser. Your data is never uploaded to any server.
What YAML structure is generated?
Each CSV row becomes a YAML list item (mapping), with column headers as keys and cell values as values.
Is the output valid YAML?
Yes. The output is valid YAML 1.2, properly handling special characters, multi-line strings, and data types.
Can I use this for Kubernetes config files?
The output is standard YAML and can be used as a starting point for Kubernetes manifests, Helm values files, CI/CD pipelines, Ansible playbooks, or any YAML-based configuration.
Will numbers and true/false values become real YAML numbers and booleans, or stay as text?
They're kept as quoted strings, exactly as they appeared in the CSV — so "30" becomes '30' and "true" becomes 'true' in the output, not the numbers 30 or the boolean true. This avoids the classic problem of a leading zero (e.g. a ZIP code "02134") silently turning into the number 2134. If you need native YAML numbers or booleans, cast the fields after conversion.
Does it produce a YAML list or a YAML mapping keyed by ID?
Always a list — one YAML list item per CSV row, with the column headers as keys inside each item. If you need a mapping keyed by a specific column (e.g. an ID), you'll need to restructure the output after conversion; the converter doesn't infer which column should be the key.
Does it handle special characters and multi-line cell values correctly?
Yes. The output is standard YAML 1.2, so values containing colons, quotes, line breaks, or Unicode characters are automatically quoted or block-formatted as needed to stay valid.
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